Does her draw one ability work if i play it on my opponents attack?

Yes, as the ability tries to perform as much as possible. The first part is "Your attack" so nothing happens, but the Card Draw is not limited, so it can happen whenever.

-Tinman

actually no. the -2dmg on your attack draw 1 card yes u can. but the other one for drawing 2 u cant, cuz it says if it deals damage referring to your attack