Am I worrying about this too much?

Hello, this is my first time doing one of these, and it’s driving me insane.

*I want to add that my memory is bad and often I can’t remember moments that either hurt or there are things, so there might be some gaps in this post*

I (16 F) have been with my girl (16 F) for 1 year 1 month, on our 1 year I made her a little custom card and wrote her things, I wasn’t expecting anything to be given to me because I am the masc in this relationship if that explains anything, so I got picked up by her mom and her, and as we were driving to their house and go and say, “Hey it’s our one year, I made you a card here you go.” She was happy about it, but then her mom said, “Oh, it’s your guy’s one year?” I questioned why she hadn’t told her mom about it, and she stuttered a bit. She goes, “I didn’t think it was that big of a deal to mention it to her,” and that sort of hurt in the moment, still kinda does. Still, she and her mom started telling me about how they got a PS4 game on sale and how they tried to put it in their PS5 because maybe it could work. Still, It didn’t work, and I’ve always wanted the game their talking about so I told them, since wanted to return it, that I have a PS4 and I could always played the game and not let the game go to waste, my girlfriend saw me get all excited so she was like “There’s your one year gift.” I thought that was strange for a second because what if they didn’t have the game bought, and don’t get me wrong, I’m grateful that they had the game and decided to give it to me, but I was a bit confused with her answer. Flash forward we have a good time or whatever, and now its like 7 so we walk out the door because my moms here to pick me up, and I ask “Hey did you make me anything for our 1 year?” (I want to add that she written a letter and stuff for christmas and I think she wrote me a letter for valentine’s day, can’t remember) and she sits there for a second “Oh no no, last night I was sort of writing something but then I forgot,, sorry” and I was like “Oh okay!” and I left her house, I didn’t think about it for a week or so, but ever since for a month now its been reoccurring in my head and its driving me nuts. Am I worrying about it, and overthinking it too much? I mean, I get that we’re both 16, it’s not like people don’t make mistakes or whatever, right? I love her to death and beyond, I hate that I question shit like this. I know I’m immature, she’s told me that before, so I feel like I’m worried about the wrong thing.

—

TL;DR: My girlfriend didn’t seem like our 1 year felt as big to her as it did to me.. I asked her if she got anything or wrote anything, but it looks like she made an excuse on the spot. Now I’ve been thinking about it for a month