Frustrated -_-

I felt bad for my aunt so I invited her to come up and stay with my boy friend and I. I thought having her here when the baby gets here would help me. I've never really had family my entire life and I want to show my new born son what it feels like to have people that love him. Well since she moved up we got a new place and I had to temporary (hopefully) place my dogs with with bfs grandparents due to issues and now she is using my car to commute to her job which is a hour and a half away both ways. She's letting me use her car but I'm worried that my car is older and all that milage isn't good for my car. I need this car for my baby and also my boyfriends truck is breaking down so soon he will need my car to make it to work as well. Ever since she moved in with us she is trying to control everything. And I'm a laid back person. It takes a lot to get under my skin. But her getting frustrated over nothing and yelling at me is getting tiring. I even asked her to get a flu shot before the baby is born and she told me no she doesn't believe in it. I will be damned if my baby gets sick because she can't get a 10 buck shot. Also she is obsessed with making me and my bf learn how to put the toilet seat down so the baby doesn't drown in the toilet. Mind the fact I always have the door shut. The baby isn't here yet. And won't be doing any kind of crawling or walking for a long time. I'm getting so frustrated already.