Hi my daughter cut her finger on a shaving blade and i gave her tylonal for pain she is 17 months can i give her wal_dryl 1hr later to help her sleep?

Not necessary: If you wouldn't ordinarily give her diphenhydramine to help her sleep you shouldn't need to now. Tylenol (acetaminophen) for pain was a good idea. If however you needEd to give diphenhydramine, say she had a violently itchy rash, you certainly could. Be aware that in some children, diphenhydramine has the opposite effect and they get hyper. Not the effect you're trying for.