TIFU by possibility getting somebody fired right after their best friend died

So for an explanation, I (F 20) work in college town and it’s not a very difficult job. Everyone in nice and the main managers are very chill about almost everything (excluding vaping). Recently they rehired this girl (F 24) and she frankly sucks as a coworker. At first she would talk over me when talking to customers and just be in the way of everyone with no urgency. (And this is a very high paced job in a crammed space). She wear short that leave little to the imagination in a family friendly establishment, and overall just made the vibe feel off. The best way to describe her is someone who thinks being dumb is cute and funny (when it just inconveniences everyone else) I found one other coworker who felt the same as I did so I knew I wasn’t the only one who disliked her. After a late night shift i saw her vaping in the storefront (which is very against the rules) and today i told my shift lead because i really don’t working with her, which I know is petty. Apparently everyone else also had issues with her, so after talking to my shift lead, all of my coworkers spent the rest of the shift today talking about how she sucked. For example she pissed a few people of by eating so much junk at work till she was sick so that she had to leave early pushing all of her closing responsibilities onto someone else making them stay 1.5 hours later the legally allowed without a break. Everybody had a different issue with her, but common denominator was that she was just bad at this job and nobody really liked her. Then tonight, in our work group-chat she announced that she needed time off to go home for her best friend’s funeral. I feel terrible. I have spent the past few days shit talking about her and i don’t know how long her friend has been dead. So I’m nervous that the shift lead i told is going to tell the main manager about the vaping and get her fired. So I would have been the reason she loses job right after her friend died.
TL:DR I ratted out my coworker because I didn’t like her and she might get fired right after her friend died.