If they step out of line, then we act. It's our purpose as Celestial Being. [Tieria wasn't going to give up on that. It was what he knew, what he stood by. Just because things were somewhat under control at home didn't mean something couldn't happen here.]
Hiling is a loose canon at times. She is more likely to act irrationally. However, she is extremely loyal to Ribbons. If he tells her to stay back, she will unless provoked. He's the planner, the one who will work in the shadows until he comes up with a Plan to act on.
[And now here was the hard part... explaining Regene...]
Regene hides much of what he knows, but he isn't loyal to Ribbons. He's likely to side with me... not necessarily 'us' as Celestial Being, but me because we are the same DNA sequence. It's difficult to explain, but I do not think we have too much to worry about from him. He isn't likely to act unless he can find someone to do the dirty work for him, anyway, even if he was to attempt something against us. However, I doubt he will.