I've wondered that too.
Here's how I feel. If I had any romantic feelings with someone just to find out they only wanted to be friends. I would say no. I'm not going to be friends with a mistake. I would speak up about that though. I can see someone simply choosing to ignore the situation if they want to avoid conflict.
The only logical explanation would be to treat it as a test.
Whatever floats thy boat.
Fear is the cause of this
I don't know feelings are simple but how we manage them is complicated... Maybe it was her influence