MIL trouble

So I know this is petty and I shouldn’t let myself stress over it BUT I’m so tired of my MIL.

My partner and I have been together for over 6 years, and are now having our first baby.

She has been very rude and short with me and anytime I bring it up recently she changes the subject without even acknowledging me. I’m trying to include her but she’s making it difficult. Never asks how I’m feeling. Making rude comments about when I want to have a shower. And basically telling me she didn’t do it this way and there’s too many rules with pregnancy because I won’t eat deli meat and unpasteurized cheese?!

I’m just so frustrated. Even during our engagement all she could talk about or focus on was her other kids break up and their fighting..... which really stole our thunder!

I just am so frustrated and trying not to put stress on myself or the baby. But it’s so difficult.

I know I shouldn’t let it bother me but easier said then done!!!

I’m trying to be the mature one and continue to involve her and be nice but I’m getting sick of it ans I don’t know how much longer my hormones can take.

Advice welcome!

Thanks for letting me have a safe space to rant