If your realtor is "doing nothing to sell your house" and is located 90 miles away, it is time for a new realtor. Try asking to be released from the contract. I bet they do it. The broker probably should not have signed you to begin with. How can they properly serve you from 90 miles away? They can't. The agent probably only took your sale listing in order to get you as buyer clients for your new house. They may be relieved to know you want out but will still use them for the purchase.
As far as doing nothing to sell your home, could there be reasons for it? Are you overpriced? Most people simply cannot be objective about the value of their home. They think their "new" kitchen or bath that they remodeled in 1990 should make their home more valuable. Same for the 10 year old "new" deck or patio. Is your home very specific in it's décor? You may love it but the majority of buyers could hate it. you need a local realtor who will be honest with you. Sometimes the one you should hire is the one that tells you what you don't want to hear.
A realtor who suggests a sale price on the high side may be trying to "buy" your listing. They invariably come to you down the road and ask for a price adjustment. Meanwhile your home has become stale. Once you do lower your price, the buyers think that they have you on the ropes and that you will lower it again. Find out what your home is truly worth by working with a realtor who will compare it to other SIMILAR homes in the same general area. Make the realtor show you the RECENT sale prices of these homes. The home will sell quicker and you will get a fair price.