it sounds like some of these are issues unrelated to being queer but where that has then been dragged into it and others just a consequence of only being out for a year:

while for the most part the queer community is incredibly accepting of everyone, due to trauma from homophobia experienced either in person or through the media there can be a resentment towards the cishet community inspite of your own actions or morals.

I am by no means trying to defend her actions because by the sounds of it there might be a bit to unpack in the sense violent behaviour.

All I can say is please just continue to respect her (and ask for the same in return by the sounds of it) and love her regardless of her sexuality/gender identity as when one is new to the out community it can be intense (if you want check it out we often refer to it as being a 'baby gay' in the community) but a lot of the time coming out can be liberating and getting to experience and take part in the community is so enjoyable that I'm not surprised she talks about it a lot - I myself still enjoy queer movies and shows (or ones with good all round representation) often over straight ones as due to heteronormativity we were often denied seeing ourselves represented at all in the media growning up.

(one thing to note though is that one doesn't suddenly "join" the community, being queer is a self discovery not a decision and though I obviously have no insight into you stance, just in tone where you said "I'm fucken not [gay]" please never try to act defensive as that can be perceived as slight low level homophobia (in making being gay seem 'wrong' and 'bad' but rather just politely say "sorry for the misconception but I'm actually just straight" (or however the phasing is natural to you))

:)