I suggest you give this girl up to a rescue so she can get the treatment she needs. It doesn't sound like she is going to be taken to the vet so the kindest thing you can do is give her up to someone who will get her treated.
Here is the list of Hedgehog Welfare Society rescues.
http://www.hedgehogwelfare.org/rescuecontacts.asp
If there are none in your area, there is a direct contact link on that page and they will do their best to arrange something.