A short bit from Quattro's viewpoint as she worries over those things, or one of the other sisters as she talks to them about it, would clear it up pretty well - of course, that does mean getting fully inside one of their heads to do this, but you have done this before with Tre at least. If you want to stick to Imma's viewpoint as much as you possibly can, have him consult one of the more social sisters, having realized he's really messed things up, dithering so long after discovering that Quattro was quite different (even if it seems to be a good difference) than expected.
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows