Originally Posted by MagicSpice

On one hand, I got a rainbow (and a new 4* girl i'll just get flower gems from).

On the other hand, she's a duplicate and I'm wondering if I can use more than one of her or should just feed her as equip/skill fodder...

up to you if it's a waste of 50 flower gems...

Unless your Sakura was 5/4, getting a dupe is never a waste. Alternatively, you can use the duplicate in two squads for RB boss events for extra damage.