Hi B.,
My son is 4 and has DiGeorge syndrome. He has a speech delay which is quite common for this syndrome. He receives speech therapy as well as occupational therapy, as he has about a year delay in certain areas, such as dressing and potty training.
One thing you should definitely be pursuing, since your child has a right to the free services, is have her screened by your local school district. It's free and they have therapists evaluate your child, and will do a full blown evaluation of your child to see what therapies she qualifies for through the school district's preschool program. She would attend a local elementary school in the mornings and receive speech therapy and whatever else she qualifies for, to help prepare her for kindergarten. My son just qualified for the program here.
Does your daughter have immune issues? My son is immuno compromised, due to low amount of T cells. He had many recurrent ear infections for a while, but that has passed. Is that why your daughter has hearing problems?
There is a very good resource for reading but I'll have to get back to you with the name of it. I can't remember it off the top of my head.
Where do you live? Are you near Spring, TX? I know of 3 other families with DiGeorge syndrome in the area. We meet every once in a while. Let me know if you would like to join us, if you should live nearby.
If you have any questions, don't hesitate to write me. I understand completely your need to find others with the same situation. It's not been an easy road to go down, but neverthe less, my son is such a joy to be with.
I hope this helps, and hope to hear back from you.
L.