Oh right I forgot about this part, but my point was that if he is on the begining of her story he don't need to edit her affection with save edit or something, this is probably is just gonna break the game latter, he just need to progress in her story and he will be able to increase her affection/corruption.You can't really visit her mother until Tia herself invites you back to her place. You need to chop wood and talk with her, one of the topics about her past will make her go awkward and stop talking, so you need to then visit Rick to ask him about Tia when he is sitting on the bridge. After that you can talk to Tia again about the topic and you can then continue progressing her story.