Not implemented yet. We'll be seeing more of Ashley's mom after Episode 11 and probably meet Leah's twin around the same time
In the mean time, here's the walkthrough if it helps:
https://docs.google.com/document/d/1S10b7Axy3gu_slxmUzOHAVQjAdjlQSogPuSqIp2ikKY/...