If she's unable to shed on her own (as in, she started to shed two days ago and still has a bunch stuck to her), then soaking helps loosen the dried skin. Soaking before she tries to shed iton her own is what causes issues.
Hey, you have the right attitude and there's definitely no harsher teacher than experience! Just keep asking questions when you have concerns, and pictures are always a bonus.It sounds like you're doing great with them - we all have overthinking, overstressing moments when it comes to animals we care about, and I think rescues even more so.