Re: If your mom is not fair to you SIL then?
Yes I can.
Only after my mum realizes where she was wrong, tries to mend things up with the sil, the sil then forgives her (if she does) and eventually mum promises to try hard not to repeat over the mistakes she’s managed to make in the past. If she doesn’t, well, then she’s in for some games.
I’m evil this very way, I know. Fun thing is, she knows I am. So yea, I expect her to understand and make do. 