Ugghh

That's external homophobia. Not internal.

According to my theory, this girl is a lesbian and was bullied for it. So she cannot accept others being gay and happy when she can’t. That’s internalized homophobia, look it up if you haven’t heard of it before:)

I'm fully aware what internalised homophobia is. I'm gay and have had it myself.
Your theory is what makes you view it as internalised whereas other people who don't share that theory would see it as externalised.
If you don't put that theory in your original comment how is someone supposed to know why you view it as internal when the story shows it as external.

She said „if it’s not ,normal, you’re better off without it“ with a pained/complex expression. Using my reading comprehension, that just screams internalized homophobia to me.

On another note, I‘m glad you were able to accept who you are, without feeling that internalized homophobia anymore. Sending love