He didn't whine, he just pined. "It's obvious that you're attracted to her", Duv said, but he didn't say anything. He gets bashful around her, but no whining.
I thought it looked like an old woman when it first showed up, and have always found the name "Mr." Fingers confusing. (Which is weird because I default to calling everything male if it has no gender characteristics.) I always just call it "The Finger-Thing".
Anyway, I doubt that anyone will ever make their save against the effect, because there would be little narrative point to a contact occurring if it were not to be certain doom. Though I do agree that it's pretty silly for Biscuit to have stepped on it (it's not completely absurd, a raging warrior isn't always going to watch every step, but it does rather conflict with his high Wisdom), and I second the idea that Biscuit should just cut off the leg before the effect spreads (and then be careful where he hops).