Thanks for all the advice.

I think you guys are right. It's better to not meet her.

My friends still insist to meet her. They want a "nice chat". In the other hand, it turned out I don't need to convince them to cancel the meeting. It seems like that manipulator tries to lure us one by one. As we're stronger in numbers, we refuse to meet her alone. She seemed afraid when we asked her to meet all of us at once.

My friends still try to trap her so she would accept the meeting. I don't think it will work. I'll update if there any plot twist.