3 yo with stomach bug. Help?

Please don’t judge. Recently new single mom trying to do this on my own.

3 yo has stomach bug. Just started around 10pm. I’m co sleeping with her to help. I have a bowl for her to throw up in.

She just spit up in her sleep- mainly a little mucus. Would you just let her just sleep or wash the hair? She doesn’t seem bothered by it. I’m keeping a wet rag nearby to clean her as she sleeps. But she’s sleeping through the gagging now she’s out. Should I prop her up? Poor thing is absolutely exhausted.