Looong story short. BIL started dating this woman a few years ago.We all got along at first, but it didn't take long for her to start causing plenty of issues within the family. She made it clear in the past that she didn't like me, but her only reasoning was that I act bitchy, even though I have zero problems with anyone else in DH's family. She caused a huge rift between DH and BIL, and prohibited BIL from spending time with our family. As a result, BIL has only been around our daughter (one year old) a handful of times. Because of the drama she caused, FIL did not invite her to come to family events. I haven't spoken to her in over a year. Well, her and BIL got "engaged" and announced a few weeks ago. I use quotes because she started wearing a diamond ring, that she apparently inherited from her family, a few months ago. DH asked BIL about it, and BIL assured DH that it was just a promise ring to show committment, not an engagement ring. Except a few months later, it's now an engagement ring.
So FIL did a complete 180 with her. Now she's invited to all family events as she's "part of the family." I have no problem with this. I can be cordial, say hello and good bye, and not be friends with the woman because I cannot deal with her drama. DH asked me to invite her to DD's first birthday. I didn't want to cause problems with his family as she has in the past, so I went ahead and invited her along with BIL and her kids. Well she took that as an invitation to be my best friend. She's been inviting us to do things every few days, which I nicely decline. We haven't spoken except through text message, like she asked what dd wanted for her birthday and things like that. Well she texts me today asking if her and BIL can babysit tomorrow! DD has never been around her, and she hardly knows BIL. I just cannot believe she would even ask. We actually have plans tomorrow, but this is getting ridiculous. I don't know how to handle it. Do I keep playing nice and declining her invites, or do I let her know somehow that I'm just not up for being friends?