Belle tried her best. She thought sending Gideon away would make his life easier. Instead, he ended up rapidly aging while in the care of his evil grandmother. That's a lot to weigh on any mother's mind.
Rumple: If you want answers, I suggest you start by asking nicely. Emma: I'm done with nice. Your son has a death wish. Which, if he messes with me one more time, I'm happy to fulfill. Snow: And I'm happy to help. We've been looking for some mother-daughter bonding.
Regina: I've cleaned up almost all my evil half's messes. Town line protection spell? Check. I freed that dragon from the mirror world. Check. Got Dr. Dolittle out of that cage. Henry: [looks confused] Regina: Don't ask. Henry: [nods] Regina: I undid everything Except for the big one.