My Sister Had A Brain Tumour Non Cancerous On The

My sister had a brain tumour non cancerous on the left side of her brain the size of a small apple. She had surgery to remove it. She was fine after surgery then 1 week later the swelling of the brain became so bad they had to sedate her and remove a part of her skull. She was sedated for 3 weeks. Now she has been awake for 2 weeks and is having episodes of brain storming, stretching and is rigid most of the time. She also is unresponsive to anyone or anything. Her eyes follow people around the room at times and sometimes cries. How long until she comes back to us properly?