I don't know what to think of my mum

I (F20) still live at home.I live with other siblings and with my dad,including my Mum (F50)

I've noticed that she kicks off over the smallest things and then takes it out on my dad (M50)...The most recent one is me hitting her with a broom.In context I didn't mean to and it hit her feet.I apologised and she told me to F off basically.

I think my parents had a little argument because when I moved into the kitchen I heard her say to my dad "Go on then,go" and he mumbled something before joining me in the kitchen.

She gets unhappy over small things and gets mad over stupid things.One argument was because I said that boys can wear nighties (like a night dress) because men used to wear them years ago,like Scrooge did in The Christmas Carol.That lead to her flipping her sh*it and grabbing me by the collar and almost punching me.This led to her being upset with my dad too,for some reason.

Thing is,I've noticed that she is judging me more and more.When I'm on nights out with her and my aunt she encourages me to flash a bit more "skin" but when I'm at home and wants me to cover up when I'm wearing dresses and skirts.

I'm dating this AMAZING person (M22) but he lived like an hour away by coach (like 2/3 hours by train and my mum is very...judging.

She keeps asking me about what he's bought me whenever I buy him anything (He does buy me stuff,we have an equal relationship) and she prefers for him to come to me because "women shouldn't travel alone" which is understandable some times but I'm on a coach for all the travel and I'm with my partner all the time I'm there.

My mum just seems really judgy and antsy around me whenever I do anything out of the ordinary.

My partner and me think that maybe she's jealous of my youth and our relationship since she has nights out like a 21 year old and the fact that me and my partner haven't really argued (We've been together for nearly 7 months now)

It's mentally draining but Idk what to do or how to feel about it all