Board Thread:Character Discussion/@comment-11883788-20130925115757/@comment-5106672-20130927150200

Most likely because, while amnesiac Belle could still fall in love with Mr. Gold and regain her memories with true love's kiss, Lacey was too superficial and selfish to really love someone to the point of true love. I think Regina wanted to make sure she would not get back to her true self. Unfortunately, I see the Blue Fairy's potion as the only solution to the problem, but it did really feel like the eleventh hour deus ex machina, like Velox Raptor said.

As for the kiss, I think not. Magic works differently in the LWM, and Rumple was shown to have bigger concerns in his mind. That's tricky, though: the authors should really address that matter.