Am I overreacting? pls someone lmk!

So until and only until November, my SO, myself and my daughter are staying with his family bc our apartment wasn't ready when we had to move out of our other one, ANYWAYS 
They are driving me NUTS! 
And here's why.. 
EVERYTIME his mom comes homes from work, she runs into the room to get my daughter (that's not what bothers me so much) what bothers me is EVERYTIME she comes in, the first thing she asks is "is she hungry?" And I'm always like no... but what I really want to say is, if she was hungry, I would be feeding her, js.
And she asks me that same question 3 or 4 times a day!!! My daughter can't make any noise cause she goes, "she's hungry, yeah she's hungry" like wth no.. 
she's making noise cause she's 3 months old and she's "babbling" 
I mean she's not even crying, she's just making noise! And if I say "well I just fed her" she looks at me like I'm stupid and then she'll look at my daughter and say "you want milk?" "I know you're hungry" like she always wants me to be shoving a bottle down my babys throat every peep she makes. 
And then she claims my daughter is "always" wet. 
Ok you guys I promise you I change my daughters diaper what feels like a thousand times a day but she pees a lot, and that's just the way it is. But I feel like the forces are against me and EVERYTIME she goes to get her, she just pees or has just peed and I'm yet aware of it, so she's always like "um her diaper is wet" "it's very wet, you need to change her" 😠 I get it, she's wet, of course I'll change her but she makes it seem like I just leave her in the same dirty diaper all day! 
And then if me or my SO has her and she gets fussy, she'll say, "is she wet? She's always wet.." but being smart about it. I CANNOT stand her! 
And she's always claiming my daughter is "cold" because we don't wrap her up in a blanket anymore, well my daughter is a chunky girl, and we have noticed that she gets too warm very easily. (I check her temp 1-2 times a day to be sure) so we usually just dress her in a sleeper of some sort with no blanket and she just swears that she's cold. We have literally checked her temperature right in front of her, it being in the mid 80's, (98.5ish is what I mean lol) and she'll say "no I know she is just cold, feel her she's cold" and try to wrap a blanket on her. And she's not even cold to the touch or anything! 
She is driving me absolutely nuts and I have had it up to here with her and my SO not saying a word to her, even tho he claims to feel the same way I do! 
Am I overreacting? 
I'm not trying to be petty, so do I sound it, or would this drive y'all up the wall too??