I'm not sure if this would qualify as healthy because of the sugar, but I eat those individual cups of oatmeal from Quaker. I make them with skim milk instead of water. I sometimes eat a cup of apple sauce.
I think the massage and dinner would be nice, or you could take them on some kind of excursion that they would like and that way you can spend some time with them alone as a thank you.
I chose Citlalli because I liked her work and her prices were reasonable. We hadn't intended on hiring an outside photographer so we were already going way over budget to do so. I really liked Claudia's pictures as well, but our decision came down to cost. I have heard great things about both Citlalli and Claudia so I'm sure your pictures will be great.
Everything will work out so hang in there. Can you ask the parents for some money to help out until the wedding? Hopefully, you will get some bucks from that to help ease the financial situation for a bit.