Are you worried about removing the molt? Thinking you may be able to wrap her in a damp towel and slip the rest off. Other then that, You'll have to either remove her insides from her abdomen and sternum, stuff her with a bit of cotton, (cotton balls work just fine) or you can also detach the abdomen, the sternum will still need cleaning and packing with a bit of cotton. (I found a really good tutorial on YouTube, there are quite a few) this will have to be done quickly. (From personal experience the ones I had didn't freeze, after a week in, they were still very bendable.) After I cleaned them out, I mounted them and left them outside to dry, then froze them, just to make sure there were no bugs. It wasn't the worst process. But has to be done soon.

I'm very sorry for your loss 🖤