I'm going to break up with my gf for choosing to go on vacation without me
What's so bad about spending some time alone?
I cannot go on enjoying my vacation in this game when she keeps telling me it's not safe down there.
It's fine to get upset at your partner or to not like something about them, but don't suppress your true thoughts and feelings, and lead to an environment of distrust. Talk to her about your feelings and see if you can come to a mutual agreement.
I guess you brought up a good point. I'll go talk to her about this and hope for the best.
Don't jump on things that you'll regret afterward. Always have that talk first.