D.T.
I was lop-sided. My parents did it for me at home. My mom did it the first time, then noticed that her hand jiggled and I was cock-eyed. So we took the "off" one out and let it heal up well and my dad re-did it.
Show her in a mirror what you're seeing. If she agrees, talk to her about what she wants to do about it. You can either take the "off" one out or take both out and re-do it. If you feel she's old enough to choose to do it in the first place then she can choose how to handle this.
I've rarely worn earrings for years now and my holes are still there. If you are going to try again, do it soon. Some people HAVE to keep earrings in or their holes close up, others are like me.
Good luck!