situational, if you can cover the most important debuffs, she has a place, after all her heal can be amplified by sol (not the barrier mind you), her reincarnation on a hime is quite usefu if you have a squishy core hime in the front, and her cooldown reduce is really handy with herc, since she would be only one turn without her buffs.

Is she core? nope, not at all, but very useful. Replaced beloborg with her, even if i don't hit the atk down cap, light is tough without it anyway, and additional heal counteracts damage to a certain degree.