Hopefully she will get better soon.
Apart from that I find it fascinating how many people think dating apps are a good idea to find sex partners.
There was a time when people meet other people in the real world. They had mutual friends or co-workers or frequented the same places. And then they got to know each other and then, normally some time later, maybe they had sex.
Now: Wow, this guy/girl looks great in that picture. Let's meet and have sex. What can possibly go wrong?