Right, needed something to get my mind off of what may happen here in the States where I live - so, I thought I'd have a look at the code in order to make a patch. I found a file in '...Afterglow 0.86\Afterglow_Data\Localisation' called 'characters.csv'. Mucked about with some of the values, and got some improvement on the relationship between the boy and his mum landlady, but it wasn't a total success.
Perhaps someone with more knowledge of Unity or free time (or general competence) may take a gander therein, sort it out, and share their findings.
Cheers!
EDIT: To be clear, the values I mention are changing text entries such as 'landlady' to 'Mum'', and not actual integers representing relationship levels or anything.