Well, IMO since the laser is dead through no fault of yours, she should have you ship it back to her, check it, and if it is in fact a factory fault, ship you a replacement. You'd be out on the shipping back to her, which from US is $35, but at least you would get a working laser.
Personally for next laser I'm going to buy from someone on this forum. Already did that once, and couldn't be happier. Ordered on monday night, had the laser in hand on wednesday, as advertised and no customs to worry about.