OP - If you are in DC, then are you working with the Early Intervention Program which I believe is over in Anacostia and has some really caring therapists? Also, you need to see if you can get information on the special education charter school, St. Coletta's because it is a beautiful school with caring teachers and therapists serving DCPS students multiple and severe physical and cognitive disabilities. It is also just about year round with a break in August of about 3 weeks. I would say services begin at age 2/3 through age 21. This school will take your daughter to develop the full extent of her abilities with a fully accessible setting and all the therapies right there. I do hope that this gives you some hope that you and your husband can raise your daughter AND continue your own lives, too, though it will be very different from what you envisioned. If you are doing private therapy in the early years, then I would really recommend the respite care aspect.
Information is at
http://www.stcoletta.org/ and it serves students age 3 through 21.