Scoliosis for Stepdaughter?

My stepdaughter likely has scoliosis. Apparently, the ex knew this was a good possibility from x-rays taken several years ago but she never bothered to tell my husband about any of this and the fact that his child might have a curved spine until a couple weeks ago! The ex is just now looking at treatment (now that she's in a lot of pain). Why not do something a few years ago when she was still growing? She should've mentioned it to dad. Does JOINT LEGAL CUSTODY not mean anything to that woman? I don't get this AT ALL.

Was DAD not there when these children were created? Has he not paid his child support on time, every week, for all these years? Was he not there to sign the Affidavit of Parentage as FATHER (even though the ex asked him not to sign this for their son because she didn't want to share him with dad and has made him pay for the last 14+ years for acknowledging his own son). He should've gotten a paternity test first in my opinion but it's a little late now. She must still be confused about the fact that he can still love his kids and not love her. She told him once that if he didn't love her...yada yada. You know how it goes. Getting sidetracked with old complaints...

There are times I really want to say "to heck with it all" and move where we want to move, where it doesn't get bitterly cold and give my daughter and I asthma problems. We stayed as close as possible for his kids but he has no input into their lives anyway! Sometimes I just want to run away from it all. I could book a cheap hotels gulf shores vacation to catch a break but we can't even afford cheap. It's been several years since we've had a vacation.

The economy is so bad right now. There is no overtime and there are rumors of paycuts. I told my husband this morning that in a couple weeks, we were going to have to start making decisions on which bills to pay and which bills to let go. Obviously, child support will be paid first. It always is. The six of us will have to suffer. My stepkids won't.