Hemorrhagic Stroke Left Hemisphere of the Brain and part of Brain Stem still at Coma

My mum-69 years old- had a severe hemorrhagic stroke (due to vascular degenarance, AVM, venous bleeding) on 11 March 2018 and I took her to the nearest hospital. In 2,5 hours she had a surgery to remove bleeding. They stopped giving her sedatives on 15 March 2018. She has been in ICU unit in unconscious situation for 22 days. She has tracheostomy, PEG and she has been breathing on her own. The doctors say that early intervention was very important with such a severe instance.

Do you have any idea when she may get out of the coma situation and start to respond to the environment?