[Deckard is infinitely patient, and about to comment –it finally occurs to /him/ that she might not realize what he's offering (he's too used to Yuuta just…knowing…) –but then she sits.  His thumb behind her makes a nice, if low, backrest, and his fingers curl a little, smallest finger loosely wrapping just forward of her hip.]

  You're very welcome.  You can hold onto my fingers if you'd like.  My partner, Yuuta, used to rest an arm around my fingers.