Others can perhaps add on to this, but I have followed the different discussions pretty compulsively for a year, and there is definitely no one from the family (online or publicly, anyway) involved in attempting to identify her.
In fact, shockingly few people have come forward to say they even KNEW her, at any point, even distantly, and those very who have (i.e. a user called s/s1988) have been unverifiable, vague, have posted once or twice to say they knew her and then disappeared, or have never posted but may have had a bit of dialogue with some of the most dedicated Webleuthers. But anyway, no one who knew her, nevermind family, is actively involved in attempting to solve her identity. Not online, anyway.
I suppose it's always very possible there are folks who knew her or knew of her who are actively working on this but just not discussing it online?
Back to the Ruffs..the indication has been that they had a fairly broken relationship & that the family leans more towards wanting to put it behind them. It has often been suggested that the family may know more than they've made public. That's speculation. Really honestly, they just seem to be very private people, probably concerned about their reputation and much less than thrilled about this dark spot in their family's history. My gut instinct is that they just want it to disappear.