Asha Ravensong is a night elf demon hunter who can be found in various places on Mardum during the demon hunter starting experience. She is briefly seen in Dalaran, accompanying Kor'vas Bloodthorn.
She later traveled with
Cassiel Nightthorn, Sirius Ebonwing and Arduen Soulblade in pursuit of a dreadlord. While the group was scouting the area of Black Rook Hold, they were captured. Asha is freed by the adventurer. In the end, she is the only survivor of her group.
Asha participated in the
Battle for the Exodar battling against High General Rakeesh, alongside Kayn Sunfury/ Altruis the Sufferer.
A prisoner of Black Rook Hold.
You want me to be one of your champions? <Asha thoughtfully ponders your request a moment.> I accept, but on one condition. I want you to put me into field duty. While I am of use here on the Fel Hammer, my talents will be put to better use back on Azeroth. Beyond that, I trust that the plan is still to bring the Burning Legion to its knees? 
Lord Illidan knows the way.
Azeroth must not fall. I have sacrificed everything. What have
you given? My life is dedicated to destroying the Burning Legion.
We are all that stands between the Legion and annihilation.
Did you just touch me?
I wouldn't if I were you.
Normally I hunt
demons but for you I'll make an exception. Do it again and your skull will be my whetstone.
You're no demon, but I will put you in the ground just the same.
I will feast on your soul!
Remember, nothing is more important than the Legion's destruction.
If we do not meet again... die well.
Do not give in to the power of the Legion.
Trust in Lord Illidan's plan.
Death to the Legion.
Interaction at the prison
We were in pursuit of a dangerous
dreadlord. Unfortunately, he lured us right into a trap.
Arduen sent me. You're free. I'm sorry to hear that Arduen didn't make it. I will make sure the demons pay for his death.