Hey Desiree,
I read your post and wanted to put in my 2-cents. My hubby is in the National Guard. In 2004 he deployed to Iraq for 18 months. During his deployment, he was considered ACTIVE DUTY. Because of that, we were all eligible for TRICARE. Not long after I graduated high school, I gave birth to my first child, a beautiful boy. Problems with my first husband made it necessary for my son to go live with his biological father & stepmother. When my current hubby deployed, he put my daughter (from first marriage) and I on his TRICARE insurance. He also did a wonderful thing and put my son on there also. Even though he wasn't responsible for that, he stepped up and enrolled my son. All he needed was my son's information.
Unless things have changed since then, your ex-husband's new wife should be able to enroll your daughter on HER TRICARE. She'll need all the information from you in order to do it. If you have a good or at least talking relationship with the new wife, I'd give her a call and find out if she's even willing to put your daughter on her TRICARE. If she is, wonderful. If she's NOT, then you might have a problem.
Also, check your divorce decree. If ex-hubby is responsible for health insurance,then he will be responsible for covering your daughter, regardless of his new wife's choice.
Hope this helps!!!!