2003 pontiac vibe gt

My sister borrowed my car, and i forgot to tell her it doesn't leak oil anymore, so she overfilled it by a whole quart, and it started making a tapping sound and it died on her bringing it back to the house, it wouldn't start for a whole day and now i can start it but it runs really rough i haven't tried starting it after how bad it ran. I don't know very much about cars and any advice is appreciated (i know someone is gonna tell me i shouldn't let people borrow my vehicle and I've already learned that lesson)