I can understand Fen's reluctance, much as I'd like Tam-wolf sex. Tam-wolf isn't exactly the most emotive bot out there. Sentience-suggesting complex body language like what Gianna or Bess are capable of can be faked, of course, but significantly less easily than you could fake sentient-sounding dialogue from an unemotive bot like Tam-wolf, if even going that far and not just saying "well it's sentient, I swear, even if you can't tell at all," unless you bust out some truly convincing dialogue from Tam-wolf itself, or maybe some sort of long disclaimer with lots of technobabble.