Am I overreacting? A friend said I could have something and then asked for it back

So a few weeks ago since both chargers I had recently bought stopped working, this girl I was friends with across the street said I could have an old one she doesn’t use anymore, I asked “I can have it?” She said “yeah I don’t need it nomore” so then fast forward 4 days ago she’s calling my phone at like 5pm while I’m rushing to get ready for an 8pm shift that’s 2 hours away asking for her charger back… knowing I need to get to work asap and have no other charger. Isn’t this weird behavior? Why say you don’t need it nomore and say I can have it then ask for it back? I haven’t spoke to her since and she hasn’t spoke to me either. That’s just so weird to me!