I decided to get a clean installation of the game, start a new playthrough and only get a walkthrough mod without incest this time, since most people here seem to think an incest mod is the most evil thing to play with.
Not nessecarily. I like other games that have incest in them. It's just that
this game was never meant to be incestuous. To alter the game isn't like other games that have
roommates in order to dodge Patreon rules; with this game the fact that Monica took you in and helped you due to you being her close friend's son is a vital part of the story. It wasn't inserted as a way to dodge Patreon rules, she really is intended to be your mother's friend with some hidden, yet to be revealed plot twists revolving around that.
One of my favourite games is "A Wife and Mother" where there is some incest. But it is part of the game's story. It isn't part of
Where the Heart Is and actually messes with an iportant part of this story, which is rare in these sorts of games. Normally you could get away with the incest patch in a game, but not this particular one. I think that, in part, is what makes the whole story so interesting. There's a backstory we don't know about yet with regard to Monica and your mother.