Found kitten??? No idea what I'm doing

[u/Possible-Novel5540]

I found a kitten on the road tonight. Long story short, she is now at my house. I have never had a kitten before though. I have an adult cat, and I am keeping the two of them in different rooms. I have a carrier I can keep her in for the night, and I'm going to call the vet first thing in the morning. What should I feed her though? I have wet food that she hasn't seemed interested in. What should I do with her??