Ren Allen

"Well these were interesting points that you made and I think I
should keep a watchful eye on the situation to be sure that he (or
the girls) don't feel like they have to be the adult because there
is only one for awhile."

I think some of those dynamics are totally normal when a two parent
household becomes one parent for a time. I've seen it happen with
other friends of mine, and it's really not a problem if the parent
isn't expecting them to be mini-adults.