She's one of our more geared players, has DTR, has her 4 pc etc and is consistantly lower on our dps charts. I'd think on a fight like Yor'sahj that favors fire mages, she'd be shooting ahead. From what I can tell, other similarly geared mages are far outstripping her on this fight.
Here's the armory for the mage in question. Her gear looks fine, ran it through rawr and there really isn't a lot of room for improvement I can see.
http://us.battle.net/wow/en/characte...aiomi/advanced
Here's the logs for our latest night on H Yor'sahj.
http://worldoflogs.com/reports/rt-dh...?s=1433&e=1982