I totally know your sitation - except I know how my FSIL's feel about me! One hates me (my vehicles have been vandilized twice & I suspect it was her) and the other I've had a rocky relationship with, but we're good now. I've been called every name in the book by my guy's family. And if things don't improve don't worry about it. Just get along with the rest of the family. It'll be her loss.