You are welcome. Diabetes sucks. My mom developed chemically induced diabetes shortly before the end, and that didn't help her in those final months at all.
I did some googleing and didn't find a heck of a lot. The other suggestion I am unfamiliar working with. Splenda I use at home. My son is nuts-wound-tight with nothing in him, and sugars just send him over the deep edge.
This is one link, with a recipe that I have found repeated several times on the net. Good as a guide to start with anyway http://www.cakencandysupply.com/Reci...-frosting.html
From there, its going to be a matter of some hands on research. Trial batches and a phone cal to you local diabetes foundation. Usually they will have access to all the ins and outs of cooking for diabetics. I do know that controlled diabetics can enjoy full carbed full sugared treats, but that they do need to appropriately adjust their insulins etc. Still, worth the phone call to see what local community resources there are.
Yup, I find that living as though my son is diabetic, and watching sugar has actually really helped the overall heath and happiness of the family. I even found that my annual self indulgent post easter chocolate binge really wasn't satisfying!! I mean, chocolate!! was!! unsatisfying!!!!! OMG!!
Certainly some info to start with and some directions to go on. Do let us know how it turns out, and what you eventually concocted that did or didn't work.
OH!!! Fast final google, and http://www.spipolyols.com/applications.html
looks right interesting!!!