It'll be interesting to see where the writers go with Laurie from here on out. She's now a vamp of her own, so--assuming that the blood bond won't carry over--one major change is she'll be able to decide for herself what she thinks of MC. It's very possible that she'll hate him now. She might be less jealous of Sharon, or maybe not if it's more of a love/hate dynamic with MC.
The other major change is that she won't necessarily be under MC's protection anymore, especially if she decides she hates him. She'll be BY FAR the weakest of the vamps we've met. She's a fledgling, but she won't have anywhere near the growth curve that we saw with MC. Sharon has been a vamp for almost 60 years and she has what, three powers? It took her two years to learn to do her "eye thing". And Laurie is going to develop slower and be less powerful than that. Also, Laurie will have AT BEST only the powers that Sharon has, so it'll be a case of "anything you can do, I can do better".
So I'm gonna make a prediction (not betting any body parts, sorry): Laurie will give MC an ultimatum to choose between her and Sharon. MC will probably not even get an option to go with her (because that would cause too much story split). She rides off into the sunrise and probably dies quickly. So she dies either way (whether Sharon saved her or not), leaving us to realize that we had doomed her the moment we brought her into this.