My YB recently had a bad shed because I interrupted her, and she didn't shed her whole chin and neck and pretty well her whole body. They don't like being touched near their heads, but in this kind of case IMO tough love is in order.
She won't like it, but you'll just have to soak her and restrain her so you can work the skin off. There's no real other way around it. It has to be done. Personally I'd do it before I feed, because the sooner after the shed you do it the easier it'll be to get off, because it's not completely dry and there may be some leftover lubricant that they use to shed the skin naturally in there.