OP, she is a first class bitch. Honestly, this would be (and was) a deal breaker for me.
I had been going out with someone for about 8 weeks and we were getting on so well, I really liked him and he seemed to be the same. We had spent a day out at the zoo/nice meal etc and went back to my house which I shared with my best friend.
I started to feel quite unwell (started a migraine) and went to bed early, leaving him downstairs with her and her boyfriend. My previous boyfriend had been her boyfriends best mate and he had treated me really badly. My boyfriend, best friend and her boyfriend, spent an hour or so chatting before he came to bed and off he went to work early the next day.
That night he phoned me out of the blue and told me that it wasn't going to work out between us and that he felt that I was not in a good place for a relationship due to what my best friend and her boyfriend had told him. So he dumped me. She denied saying anything and we had an argument before she finally admitted that they told him I was oversensitive and needy and had given my ex a really hard time (he got someone else pregnant so yes, I was devastated at the time). I had NO idea why she would do something like that, she knew how much I liked him and he seemed to like me. Our friendship ended right there, she completely let me down. This was almost 30 years ago and I still don't know why she did it.
I met the lad I had liked about 10 years after and we got chatting. He said he was sorry he had ended things, but that he panicked because he liked me and didn't know what to do. Seriously, this woman is not your friend.