I've seen more people make a situation worse than better by rushing to try to fix something. First, you shouldn't have anyone work on that until it's healed; I'd wait at least 2 months. Second, laser removal doesn't leave the skin looking like it did before you got a tattoo. There's almost always a faint outline, so I'd forget about that. Why don't you send a link to the artist and maybe we can help you see where you went wrong. Also, if you identify what city you live in, you can probably get some recommendations.
I wouldn't contact her. She phucked it up once, why would you give her another shot?
The main thing is to think this through before you do anything else. I was getting tattooed once when a woman came in with a coverup that she wanted reworked. She hated the original tattoo and didn't research the person that covered it up. Someone said that it looked like Arnold Schwarzenegger climbing out of a tar pit.
Time and patience are your friends.