Oh, no. I'm so sorry about Ally and Connor's fighting.

I'm glad Ally is OK. You caught the wound just in time to prevent infection, it seems

I don't have any other advice except that I think your plan is a sound one, and see what happens when you get back. Things might work out better when you are around to supervise their interaction all the time, then you can start leaving them alone again. Good luck and big hugs to you