Wow, do I feel for you. Pressure can break even the most optimistic person.
Still, if you can reach out, you can get help, so all is not lost.
My take? Here it is:
Help around the house – This is priority # 1. Whatever you can do to help things run smooth, will pay you back 10 fold.
Tuition – You can most likely get a payment plan so you can stay afloat.
Therapist – This, I think is something you can live without. You give the impression of someone with a real game plan, but with a landslide to deal with. There are so many self-help books out there (both on-line and in print) that you can probably work this out on your own.
Therapists will hold your hand, but (from my experience) never let you go.
You can beat this on your own.