[@Akayaofthemoon] Oh man, that fits in so well with Spinel's story arc.  As I've kind of explained already, Spinel's brain or whatever she has flat out [i]can't[/i] process emotions like a normal one would.  By giving her what amounted to an emotion transplant, Aquamarine essentially gained something of a system override to Spinel's mind.  It hasn't come up yet, but she could basically shamelessly manipulate her and Spinel would be none the wiser.  Time will tel what Aqua decides to do with this, if she even becomes fully aware of it.