The balance problems are pretty normal following treatment. Following surgery, when the vestibular nerve has been severed, everyone wakes up vomiting in the recovery room...and the nurses are prepared for it. Even though the vestibular nerve has been compromised by the tumor, it is still sending messages to the brain, but sometimes you still get wonky. As soon as it is severed, there is NO message from that side, and you brain reacts rather strongly, causing you get super wonky.
Your vestibular system has been compromised by the GK probably, and your brain is getting new messages that do match up with your good vestibular system, your eyes, and your muscles. I could not drive for a long time. I really thought about what was going on, and I realized that I was using my eyes to balance myself. My eyes were used to just LOOKING at things, but now I was using them for balance. It is hard for me to explain, but I was seeing things say at 95% and balancing at 5%, but now I was seeing things at 5% and balancing at 95%. At a stop sign, I would look for cars left and right, get super wonky, forget what I was just looking at, and start looking for a horizontal surface to get myself balanced. Very confusing until I discovered what was going on.
Try walking with your eyes closed, and you will quickly realize how important your eyes are for your balancing. I took PT for about 2 months, and my brain began to get retrained about the conflicting messages. I am 14 months post surgery, and I am still wonky, still stumble sometimes, but I have learned to live with it, still do my PT exercises, and my life could not be any better. I know your life is the not what you want it to be, but get into PT, and you will turn your life around...you really will!
By the way, your facial nerve was also compromised by the GK, and that is why your taste buds are not working correctly. Recovery is a long term process. My life has really changed since my surgery. It is kind of like falling off a horse...you just have to get right back in the saddle.
All of us here understand what you are going through. VENTING is a very important part of your recovery, and all of us here have broad, understanding shoulders. I have never met anyone one here in person, but I feel like a lot of people here are friends of mine, and they listen to my venting and I listen to theirs.
Last bit of advice, get into PT. You will really discover what is going on in your brain, and how to deal with it. You will recover faster, and get back to being a great mom and wife!
James