I think she would be stupid if she didn't reunite, It would make her hated which wouldn't help with her solo career. She's not as successful as Cheryl to go only solo. She needs GA and GA need her. She leaves and what? Cheryl takes her parts? Each girls take one line of her part? I don't see it. It'd be better if girls didn't reunite then reunite without her...
sorry, that's my opinion.