Hello. Sorry you have had the need to find your way here.
One of the best ways to educate yourself is to read everything there is under this site's Patient & Caregivers tab. Its advice is clear and accurate, plus it outlines all the options.
I understand the problem with steroids completely. Too many of ITP's treatments are worse than the disease. As for NPlate, I currently use it. It works for me, but not as consistently as I'd prefer. Still... I much rather put up with it over long-term prednisone.
As for NPlate and your mom, I suggest that the dose might not yet be spot on. The maximum dose for the drug is 10 mcgs/kilogram of body weight. Has your mother reached the max yet? The other suggestion I have is to make sure her doctor understands that NPlate is NOT meant to put the platelet count into normal range. That, in fact, can be dangerous. The ideal count with the drug is only 50. So ask her doctor about his platelet goal as well as where her dosage is at the moment.
I hope this has been useful. Wishing your mother and you the best.