I love my mil and she loves LO so much, but lately I have been finding myself resenting her and I hate myself for it because she's such a lovely person.
I think it's because when my mum does something I don't agree with I have it out with her, but when my mil does I don't have the courage to, therefore it keeps building up.
Also she has another grandchild 2 months older than my LO and she's always comparing them, and comparing my and SIL parenting, which ano is natural she loves both kids equally but we both parent differently and that should be respected.
So yeah your not alone, but mine is because I don't speak up for myself because I don't want to upset her.