Tansy and Foxy share similar headspaces for me, though different head-voices. Foxy is more like Pinkie Pie, but Tansy is more like Harley Quinn or Tiny Tina from Borderlands 2 (my girlfriend keeps hearing Tina's voice, at least. She's not read Newsflesh yet, but I will be curious as to what she thinks of Foxy when she does)

Sherman was a surprise. And makes sense why he kept flirting with her - they were of a kind, more or less.