Not gaslighting, and from what you seem to describe, doesn’t appear to be manipulative either. She just seems to be angry. Not to say that you can’t be both angry and manipulative, but I don’t see clear intent for her to try to guilt trip or gaslight you.
Gaslighting would be if she lied and said that she sent you a message when in fact she didn’t. i.e., lying with the intent to make you question your judgment and perception
Guilt tripping would be if she pressured you into giving her a gift as compensation for ignoring her message. i.e., taking advantage of someone’s feelings of guilt to get them to do something for you.
I don’t see any lie, and I don’t see hee trying to extract anything out of you. Worst case interpretation, she’s being a bit petty. Best case interpretation, she’s scared of being alone outside.
I noticed your final paragraph, and I would be cautious in general about saying that someone who’s trying to convince you that their anger is justified is automatically manipulative. That’s kind of just how anger works. People think that their anger is justified. Otherwise they wouldn’t be angry. Manipulation occurs when you start to feel like you are being used for their own motives.
Either way, you should probably talk to her about it. It seems like she thinks the issue is more severe than you appear to think, and that is something that should be discussed with her