You have an amazing variety now of low fat and cholesterol free ice cream, and there's always sorbet, though it's an acquired taste, so she might not go for it.
Chocolate is more difficult, but I've heard that id you're taking the really concentrated varieties, with 70% or 85% real cocoa, you get less cholesterol, and one or two bites really quite the craving , so you might want to try that.
Best of health...