I have a pretty good relationship with my inlaws. MIL and FIL are in Florida for the winter. SIL is very dependant on them. She's the crazy cat lady, literally. She goes to work and comes home to their house every night for dinner. If she doesn't feel like stopping by their house, MIL takes dinner over to her. She doesn't cook. I've always gotten along pretty well with her, but since IL's are gone, she's been turning to DH for everything. Fixing her car multiple times, help walking her to the barn to feed cats (it was icy, she was scared, yada yada). MIL has many of her cats at their house that she usually cares for, so SIL is inconvenienced and pissed that she has to care for them while they're gone. She even called DH bitching because her car was having issues and demanded he pick her up from work (1 1/2 hrs away). I finally sent her a text asking that she stop asking so much of him.
Anyway . . I was going to plan a surprise bday party for her, DH and DS (all of their bdays are next month). I mentioned it to MIL, told her I thought it would help cheer SIL up (she's even been sending them nasty texts daily, poor girl is pushing everyone away). But that was before she went all nasty on DH. So my question is (and asking in this group, I can probably guess what the answer will be, lol) do I still include her in the party, or should I just plan it for my guys? I don't want to be rude and exclude her out of spite and I don't want MIL to be upset with me for suddenly taking SIL out of the picture, but I also don't think she deserves to be included. I'm not even sure she'd truly appreciate it, but her bday is 2 days after hubby's, so I'm not sure how everyone will interpret it, if it'll be frowned upon that I didn't include her. I originally wanted to do something nice but now don't feel she's worth the effort.