What else d'you call someone you raised a child with?
[ Aaand that snaps her jaw shut. It stays shut. Forced garrulousness is a dumb thing to get upset about, and Haruka feels petty for letting it bother her, but...if she can't control anything else about her life, her own body seems like a pretty reasonable minimum.
The paper airplane part of murder therapy was way more fun than this. ]