Dear kbas719:
It's very good to hear from you after a year's absence! I really worry about those like you we haven't heard from in a long time.
If your daughter is still having episodes despite taking such a huge amount of theophylline and terbutaline, then the time has definitely come to try an IVIG therapy. Patients and doctors all over the world have been reporting mostly excellent results for several years now.
I can't tell you whether the change in the color of her fingers is related to her SCLS, but depending on the severity of the drop in blood pressure during each of her episodes, she is at risk of sustaining cumulative and irreversible damage to her vital organs (mainly the brain, heart and kidneys) and/or her arms, fingers, legs and feet.
If you haven't done this yet, have your daughter's main doctor make arrangements for her to be examined ASAP by Dr. Druey at NIH. And since you live in New York State, know that there is an excellent doctor in New York City (Dr. Pecker, see his contact details towards the bottom of the Disorder Details section) that she could be referred to for immediate evaluation and likely treatment with IVIG.
Write to me at _aporzeca@american.edu_ if I may be of additional assistance.