This is an updated version including Talia.
It'd seem that all 8 are related ..... which I hadn't realised before, but as ever, it'd be nice to have a little more info, eg. the father(s) of Tekita and her 2 sisters ..... and the parents of Tombe (as Tekita's half brother, they must share the same father - whoever that is, otherwise he'd be shown as Billyjoe's son). Also, a bit of a mystery ....... there are notices up saying that Billyjoe spent 25 years at a reseach facility, which, if correct, would mean she came to Colchester in 2000. Yet she has 2 daughters born before that date - were they also born at the research facility ?