She should definitely use a product made by a cake decorating company! I would think that if she is an experienced cake maker, she would KNOW this! I think she would really be taking a chance if she did not use products designed for cake decorating.
Tell her to look here:
a.
http://www.candylandcrafts.com/decor...oppe.htm?OVRAW
b.
http://www.wilton.com/
c.
http://www.createacakeshop.com/Merch...ategory_Code=C
d.
http://www.sugarcraft.com/
All she has to do is type "cake deorating supplies" into a search engine and she will find lots of companies.
Sorry to sound "mean" or "nasty" but, WHATEVER is she thinking? If she really knew what she was doing, she would automatically search in the cake decorating catalogs!
I have used SU! products for YEARS but I would NEVER even think of using them in my cake decorating! And I have decorated cakes for years, too!