This Kiso's coming home, and nobody shall stop me!!!!!
I would think Kuma and Tama would object strongly. Kitakami and Oi too....if they can get Oi off Kitakami long enough for a spread of torpedoes in defense of her sibling, Kiso.
Though the Admiral looks like he might have just broken as well.
so i guess she lost her memories but somehow preserves her memory of being a shipgirl.
There are many types of memory loss. Some of them being able to remember things that the victim is too used to, or nature instinct like. Language skills, some of their own body features are commonly preserved even after memory loss.