how can i help her to come out from coma?!

Coma comes from too much tension on the brain. And believe it or not the brain is her door way to recovery at this point. When you go and see her talk to her play with her hair and hands and let her know that you are there with her. When a person is in a coma the one they love is the only person that help give you the vibe to recover and also when a person is in coma they can still hear. My point.. talking is the key. And when others get worry about they love ones being in coma... what they don't know is being in a coma is the best and only kind of rest the body really needs to revibe.

I pray that she awakes soon cause you sound like you really do love her
Good luck kabir

Once the physical evaluation is complete, several neurological examinations are performed. A patient's level of consciousness is assessed using the Glasgow Coma Scale or the Rancho Los Amigos Scale. These scales also help doctors evaluate a patient's chance of recovery.

Patients in a coma are at risk for a variety of complications. One of the most serious is progression into a persistent vegetative state. A coma lasting longer than two to four weeks is reclassified as a persistent vegetative state. Patients who fall into a persistent vegetative state typically have much lower chances of recovery.

all about tbi

Some people come out of comas naturally and within a week or two are back to normally. It usually helps if you, when you go to visit her, just keep speaking and talking to her as this may trigger a memory in her brain and cause her to come round from the coma.
Just talk to her regulary and i wish you and her all the luck in the world. you will be in my prayers x

Talk to her a lot.. And also like the dude above said try to trigger a memory that she would most likely remember so talk about it and things related but talk all the time.. She can hear you remember that and don't say sad things that might get depressed I'm so sorry to hear about that :( hope all goes well best of luck!