I am of the opinion that, "her problems are no longer your problems".
it appears Ed has got him self a whole heap of new problems to deal with.
I would hit her up for some cash on the kids stuff..it may not work and you may have to downgrade their activities for a period of time..
the swapping time thing is a rough one..sometimes you have to give a little to get a little..I always try to put Caleigh before myself when deciding the swapping thing...