She conned red to me at lvl 63...so she is 66 or higher.
We took her out pretty easy with just under two groups - 63sk 63war 62enc 60clr 62clr 50shm 60rog
Chanter would pacify the room and I would pull singles. The sirens are immune to snare so snare/fd pulling was not an option.
She dropped bow, chanter spell and a charged eb item.
Kaotix
63 TSK
Sol Ro