Thank y'all for your responses. Several days after posting this I blocked her on that website. I feel a little bad for doing so, since she's been nothing but nice to me, but I can't shake the feeling she is using it to spy on me for him, so it's just safer for peace of mind to have her blocked. I know she could still make a sock puppet account and just use that to spy on me, but that takes more effort and I don't think a normal person would do that.