I think the coke and burger was a miscommunication. She probably said let’s get drinks. I’ll pay. And wasn’t intending for anyone to get food. And the lady who offered you lifts probably felt inconvenienced after a while, even if it was irrational. I’d say lift wise, be independent because that could annoy people in the long run. And don’t accept offers from people when you’re going out to pay for anything.

By the way I don’t particularly think anything you did was wrong per say. Maybe more miscommunication.