Sleep Deprived

Switch your workout time! That's way too early to work out if you don't get to sleep until after midnight. Sleep is essential for weight loss - and that means hours spent sleeping, which pills won't help you with. Ideal hours/night spent sleeping is between 7-8.

Have you tried working out before you go to bed? While a lot of people say that it gives them energy and keeps them up, it actually depletes my energy and wipes me out. After I get done working out at night I have about an hour before it's lights out for me.

Hyland's brand homeopathic Insomnia pills. Or Calms Forte. If you can't find them at your pharmacy (I can't) you can order them on Amazon for cheap. They work, and they're not habit-forming.

I'm in a similar situation in that I work 9 hour days and spend over 3 hours a day commuting to my desk job. I do my best to get great workouts on the weekends, and I made some adjustments at work: I sit on an exercise ball for part of the day (to strengthen my core & improve my balance), I have a set of pedals under my desk -- I don't always pedal very fast (can't make a lot of noise in my cube environment), but I try to keep them moving. I have a twisty board that I try to use for a few minutes once an hour, and I set my Outlook Calendar to ding at me once an hour to remind me to stand up, stretch, walk a lap around the cube farm or run up and down the steps a few times. I also got some exercises from our physical therapy department at work (I work in a hospital) for their wheelchair-bound patients. I'm not wheelchair-bound, but I can do all the exercises while sitting at my desk while I'm on boring phone calls! I bet if you did a Google search, you could find some good similar ones. I'm probably not going to win a triathalon by doing all this, but the weight is coming off, and it is better than doing nothing. I also try really hard to get a full 8 hours of sleep a night. On the rare occasion I can't sleep, I make sure the room is totally dark and as quiet as possible. That usually does the trick for me.

Melatonin is natural.
Kudos on working so hard! Tough Woman you are!

Unless you can fall asleep right after working out (and many people cannot), then I don't think that moving your workout to the end of the day will improve things substantially. As others have suggested, working out between jobs might be a good idea it if is an option. If not, I would actually recommend meditation, many people find this helps them to relax and fall asleep faster.

Melatonin supplements always make me wake up feeling drowsy and hung-over, not really the effect you are going for, so if you try them try them at a time when you can afford the side effects. If tea helps you sleep, I'd say stick with that, especially something like chamomile, it is very calming and won't add significant calories to your day.

I've been there, done that. Kind of still doing that, but attempting to cut back as of late.

Herbs that you'll want to pay attention to:
Valerian (can be used in tea or supplement, strong, nasty aroma)
Vervain (tea or supplement, very palatable)
Chammomile (tea, good flavor)
Lavender (tea or aroma therapy, mild and pleasant)
California Poppy (ingredient in remedies/supplements)
St. John's Wort (supplement, also available as homeopathic remedy as hypericum perforatum)

I'm good with herbs and such, if you need anything else. Good luck, and don't hurt yourself with that schedule :<

Bob Marley Mellow mood tea works awesome!!