Clogged Nostrils

I just got me Boa constrictor out and I noticed something funny. Her nostrils were both clogged. Not with mucus or any bodily fluid but with what looked like dried skin. The humidy has been really low in my house and she is in an aquarium with a mesh top. I am going to make an incloser soon were I can control the humidity better. Anyway I was wondering if anyone knew what it could be and how to fix it. She can still breathe but not as easy as before.
I am snowed in so I can't take her to the vet for a few days. So any help will be greatly appriciated.

I will try and put some pics up a little later.

Try letting her soak in a tub of warm water. It soulds like she has a stuck shed on her face. If so, the old skin should loosen up in the water and come right off.

I thought that to but it is only in her nose which is weard to me.