The moral of the story: this Admiral is trapped in a horrifying worldline and he doesn't know how to get out.
Does it?
This pool is about "unexpectedly evil" faces for KanColle girls, and for variety's sake, they play to the traits of the characters. The Ro/Goya connection is obvious enough to be completely expected to have an "evil senpai" reveal.
There's no reference back to this in particular, Goya's just saying that Ro's easy to manipulate.
I still don't understand what's heart-breaking about this.
Rather than a natural evolution of personality, this version is a forcible personality/soul overwriting. She recognizes it, but has no capacity to save herself from being overwritten into a different person.
Save me...Yuu is... not Yuu now...This is... strange...