Driver side wiper blade help.

[Shiwnath]

So my girlfriend was telling me that her driver side wiper blade doesn't fully extend to the left side of her windshield. Today it was raining and we both were out driving and I compared how much her wipers go to the left side and to how much mine did and there was about 1" difference. How could I fix hers so that it goes towards more to the left before it sweeps back to the right. Before she bought her Alero, the windshield was replaced...I dont know if that matters.