At a party, a woman is slapped and shoved by a man. At the time of the assault, the woman was holding a glass of wine. Because of the suddenness of the attack, the woman struck out at the man without realizing she was holding the wine glass. The wine glass cut the man's throat and he bled to death.

The woman is charged with 2^nd degree murder. Would she be able to assert the self-defense successfully? Why or why not?