It’s entirely possible that Supergirl isn’t allowed to use the metagene angle, because The CW has the “rights” to metahumans (like Marvel Studios not being able to use “mutants”).

As someone who has reluctantly binge watched Once Upon a Time over the past 4 days, I have to admit that Ruby transforming back sans clothing would significantly increase my investment in the story.

Chopstick Resting Bitch Face