Please ask your Doctor about having a EMG test done by the best neurologist in your area. This test will show how much (or how little) nerve response remains and where. it's a very useful tool to have for your decision making process. I would also look into facial retraining to see what you could be working on that may help in the return.
In consideration of all options please make sure that the doctors discusses with you the expected gains in TONE and MOTION. A person can gain in Tone, which is good, it helps fight the gravity issue, or can gain in TONE and MOTION which is even better. It's important that this be discussed indepth with your doctors so you both understand the expectations.
Please consider attending a support group meeting. (ANA National office in Cummings Georgia will be able to provide you with the contact person for the support nearest you.) We found ours to be a valuable source of information as well as a source of emotional support. It helps to know that you aren't the only person dealing with these issues and others maybe able to offer suggestions that helped in dealing with this, or helped to make life easier.
Best to you