Making it a DoT was always an option, it's just a weird tweak to make when Selene is pitched as the "support" type faerie. Eos fulfills her role as the straight-up healer fairy far better.

I really wonder why SE won't change Selene's skills since we've been complaining about Silent Dusk for a few years now. AST cards have been modded several times, yet our buff/debuff options have not.