I[19m] need help with the girl [19f] I like, am I delusional?

Hey, thanks for reading my post and for trying to help me. At first if you know a similar community in wich this post would fit more let me know.

As an outline I’m 19 years old from Germany and at the start of the storrys I was still going to school. I’m not very pretty but also not ugly.
So to start me and my friend group in school (wich includes the girl I’m asking about) where sitting together and talking about prom. We had to form groups of 2 to dance together at prom(part of the ceremony Yara Yara Yara) we are 3 girls and 3 boys the debate was if I and my best friend and 2 of the girls went together or if we did all boy/girl. My homeboy saved me and set thinks up for me and the plan was that I go with the girl I like and he goes with the other girl.
I was very happy about that but at the moment I wasn’t really sure if I liked the girl in a romantic way.
Thinks in school went on normaly until I had the idea to go to a climbing park. First I asked my friend in school but he didn’t like it. So I had the next crazy idea to ask the girl (let’s name her Anna), because she is sporty and I wanted to get to know her better.
To my surprise she actually said yes and about 3 weeks later we went to a park. As far as I can tell we both had much fun. Like there where good conversations some adrenaline from the hight and no awkward silence which I feared the most.

Some days after that I asked her to go play billiards with me to wich she sad no because “it is not her thing”, so I asked if we want to go bowling together and she said yes.
This time the meeting was not as good. There was no awkward silence or anything but she was really really bad at bowling wich dragged her down I guess and she was on her phone a lot, but still attentive to what I was saying and to the game. Afterwards I had the plan to ask her out to eat with me, but she declined it because she had food at home and her mom would get angry because she often let’s food get bad. So we just went home.

Next I asked her out to the zoo. To wich she said “I would love to but I have much to work rn with prom and stuff.” wich is as far as I can tell the absolute truth because the was really active in school clubs.

So I didn’t ask her out anymore. This all happened over the span of 2 months I think. An important information I think is that we did write sometimes in that time but I was always the one writing first, except once where she asked me if we want to do a present for a friends birthday together. I also send her tik toks regularly to wich she always replys but she never sends me any.

Bevore prom we had some dance lessons together (organized by the school) in wich we mostly danced together but also danced with others.
We talked about our outfits and thinks and the instructor told us that fitting ties to the dress of the girl would be fancy.
I fell in love with the idea and asked her if she would like to do anything like that. To wich she said “how ever you like”.
I still thought that the idea was lovely so I put a lot of work into it and even sew my own pocket square which perfectly matches ber dress.
I wanted to surprise her with it at prom.

At prom we had a great time in the friend group, bit nothing special between me and Anna. I hoped she would recognize that we where matching, but she didn’t. A friend who knew I wanted to match with her told me to tell her about, but I didn’t want to because I was not sure if she liked it or if it doesn’t matter to her.
So the night went on, we had out one dance together wich was beautiful ( I actually can’t stop thinking about that moment every day) and the party continued.

The next day I first asked a mutual friend if there was any chance that Anna and me would get together and if she would like the idea of the next meeting I had planned (not the zoo) she told me that she thought that it was difficult. Me and Anna seem to get along wery good and she would love the meeting I had planned, but there was one problem.

I knew the problem but not to that extent it is a guy with the “code name” “Mo” (I knew that because I heard them talk about them) Anna and “MO” met in a local club and chatted some weeks after that, she talked really much about him at that time (about 6 months ago),but thinks didn’t seem to work out because she ghosted him for a couple of days and was then scared to write him again. After that she mentioned him like 3 or 4 times but always in a context of forgetting him or getting over him. I’m not sure if there ever was a meeting between them or anything more than texts, but I know that she has/had a major crush on him.

So the mutual friend told me that anna was still often thinking about this “MO” and that she is not sure if there could be anything more than friendship because of that.

Then I realized that on our first meeting (wich went about 4 hours) she was paranoid about a person she texting with being there (he was not just someone similar) she was paranoid for about an hour and wanted to avoid him, but she couldn’t get her glance of the group he was in until they came closer and we confirmed he was actually not there.
At the time she was not texting him anymore but she was so trapped by just the thought of him being there.

A day after I asked the mutual friend I asked Anna out for the third meeting. To wich she said “with the friend group or just us” I told her just us and she said “then no, sorry”
Now I really don’t know what to do and need your help.
I’m torn and don’t know if there could be more between us because of that “MO” guy.
Also I don’t know if she actually likes me or not because she never wrote me first, but she still went to meet me (I’m saying meeting because I never asked her out on a date, I just asked her to hang out)
My thought at the moment is that she said yes to the first 2 meetings because she didn’t want to make things awkward when we where going to school and prom together. But idk
I just can’t stop thinking about her and the uncertainty kills me.

Thanks for reading my wall of texts and thinking about my situation. If you have any more questions just write me in private or write a comment, I’m sure I forgot something or didn’t write everything understandable.
Let me know what your advice here is, I don’t know what to do next.

TL;DR the girl doesn’t show any direct since of interest in me but still met up with me 2 times on meetings my friend called date (wich I never cleared with the girl if they where dates) there also is a past lover in the girls live wich she has no contact to anymore and wants to forget him. Still I don’t know if she want to get to know me on a romantic level.