This is exactly what I was going to say. If you listen to Kendra when shes talking on the phone at the police station, she will mention that she is fucking your mother and that she is planning on going after you and your sister. When Sasha confronts Lisa with her phone, the picture visible is very clearly Kendra. You can even see her blue jump suit. Then Lexi and Akira show you a resent picture of your mother with a face full of cum, but no explanation as to why or how. And then finally there are Sasha's panties that you get in the mail from Kendra, seemingly meant for Sasha. Which suggest that Kendra's already at least been in your old house and in your sisters room. Sasha also implies that she recognized Kendra, who also tells you that she was at the club for your sister. So as of right now, there is most definitely unavoidable already ongoing NTR, with some of it even being implied by Mia in your final conversation with her in 0.3 at zero NTR points.
