Something tells me that this isn't his GF's toon, but his instead...
"That rug really tied the room together"
Honestly if your shot priority list is right (KS > ES > BA > SrS > GT > AS), as long as you're pushing buttons as quickly as possible then your DPS should be as good as it can be. If she has a TED ask her to try out BM with toth+BS for galakras and spoils, she might find it more fun / easier to play.
Also change the gem in necklace to agi crit