Thank you very much guys I really appreciate your tips =)

@Ricdeau: I stay longer than stardust before the meteor stream, but I think not longer enough. I'll try to keep attacking until she disappears next time.... maybe asking offtank to move out earlier.... running with an offtank probably makes me move earlier to avoid 2 streams stacked. As for Thermomic Beam, doesn't it heal Nael if I get hit? anyway I'll try your suggestions.

@alsims2007: yeah probably my DoTs (Fracture and ToD) mess me up. Will try to avoid them.