I definitely hope we have the chance to check up on the mom in the new update. I'm more concerned with the siblings because they actually left the house and they're on their own. The mother still, at least, has roof over her head.
My obvious preference would be to have both of them over in MC's bed, one on each side. Y'know, to warm them up. Give a kiss to the girlfriend and, after she falls asleep, give a kiss to MC's new trans girlfriend.
But I'm a greedy harem lover.
And I think with Ally, if you choose that option, it'll definitely start to happen. I chose the sissy route first (because they're hot, too), but MC was just way too rough and cruel about it. Trans girlfriend is the way to go. Lol