Ummm .... congrats?!
You know, I tell my kids this every chance I get: I would NOT want to be a teenager or Twenty-Something EVER again. It sucked. Too much d@mn drama and not enough experience to know what was worth the drama (and what wasn't).
Personally, and I mean no offense), it sounds as though they both are on the high side of immaturity (and boy! Do I remember THOSE days!) and really have no idea WHAT they want. What sucks is that YOU'RE being pulled into the drama (consider it emotional shrapnel) simply because of proximity.
Chances are, she's feeling neglected. She's obviously been left with the kids while he's deployed, she's feeling not only abandoned, but I'll bet she's also feeling that she's "missing out" on the fun stuff youth usually provides. Add to that, when her hubby IS home, instead of listening to her, being with her, it sounds as though he's off buying crap they don't need.
It sounds as though she's being FORCED, by her circumstances, to be an adult and a SINGLE mother (unless I'm missing the point, it doesn't sound as though hubby really does much in the parenting department) ... and the financially responsible person in the "household."
BTDT.
But still, even though I'll bet her present condition is similar to my previous marriage's ... I don't envy YOU one bit. I was a real PITA to everyone around me. I knee-jerk reacted to EVERYTHING. And it seemed that EVERYTHING upset the crap out of me. When you're having crap happen in your marriage and you're young AND you have young kids, it seems like it's the end of the world.
But I really wish all of you (well, maybe not HIM) the best of luck Pamela. You WILL get through this and so will she. You all may end up with scars, but you'll get through it and find ya'll's happy place.
(BTW, may previous marriage was a nightmare ... but in my case, my Ex decided he was gay and STILL wanted to be married -- I guess I was good cover, dontchaknow - and keep his military career AND his boyfriend on the side. When I decided that wasn't how I wanted to live -- or how I wanted my soon-to-be-born daughter to live -- I left his butt. So if I can start over, SHE can if she HAS to)