I need her off my back 😑

Let me start by saying I love my grandma, she helped raise me as a kid and did a lot for me. BUT now I'm a grown woman, I own my own house, take care of my property, I'm married, pay my taxes blah blah blah. But for some reason she still think I'm a struggling kid who can't take care of her business.

She lives on my property in her RV and in return pays one bill because we share a water line and can't split it in to 2 households. I never ask her for anything besides to keep up with her own bills.

She barges into my house constantly with no warning and when I disagree with her she holds the past over my head from when I was a child and this dumb water bill that's around 200 a month.

I recently bought a bull calf with MY money and she is furious saying he's going to destroy everything,and my husband needs to tell me no about stuff like this (dumb because I'm my own women and hubs did not pay for this bull and actually likes my bull). She also attacks my spending habits constantly even though I'm doing fine financially she thinks I'm in the poor house because she pays 1 bill.

I need to tell her it's time to start acting like a grandma and not like I'm a little kid who can't take care of herself anymore, but nicely. Anyone else have to go through this please help a sister out! I'm also pregnant and I swear if she tries to tell me how to raise my child when she didn't raise my mother right I think I might blow up on her. 🤦🏽‍♀️