Just to clarify your second statement, gaslighting is when person A tries to convince person B that person B did not see/hear/experience something that person B did in fact see, hear, or experience.
In OP’s situation, their girlfriend might be gaslighting OP if she texted “I’m getting an Uber home, see you in a bit” and then got mad and insisted she had told OP to meet her at the door.
All that said, I will echo many others in this thread and say that just because it isn’t gaslighting doesn’t mean OP is in a healthy relationship. OP, please insist on relationship counseling at a minimum.