You do realize that with this patch you're changing a major part of the story? Yes, I have no issue with the incest patch. But changing Jane to his mother contradicts the story. You can easily turn Lucy and her side of twin to sister (well, let's say half sister) and my reason for this is it is clearly stated that his parents were killed when he was younger and raised by his grandmother. How can his "parents" note the plural here be killed yet Jane returns as his mother? I can see the patch working but with the following changes:
- If you want to avoid all the step siblings drama, make Jane either his aunt, step mom or just someone his dad had a fling with and had outside children.
- Or make Jane his aunt, and the twins his cousins.
That's about the only way I see the incest patch as an applicable incest patch without changing the story as if we follow closely, there's a strong possibility that his parent's death were not accidental. There's a lot of dark undercurrents that will throw the loop to you of having Jane as his biological mother.
Anyways, you can just ignore this post. It's just something I noticed having played the game twice just to make sure I was following closely and not letting my eyes play tricks on me.