Just a question, were you dodging slipstream? It's a cast that does a lot of damage in a straight line at you, but doesn't have a ground indicator like most things you've gotten used to up to this point. This means you need to be watching her cast bar. This isn't really a case of needing better gear but needing the fight explained. If you were doing that and using your cooldowns, then the person was just trying to pass blame. If you weren't doing the above they were still rude but that is what was going on to set it off. Hope that makes sense.