She did n't make an appearance until " Shawn ( and Gus ) Of The Dead".And with the way the " present day " episode started , I still thought Shawn did n't like his mother . He had hid in his room , avoiding her . And then he seemed a little resentful when he said that he had dinner with his mother .

Question: Why might Shawn not like his own mother ?
Answer: It might be that Shawn had a bad relationship with her growing up .It might be that Shawn had a bad relationship with his dad .It might be that Shawn had a good relationship with her growing up .It might be that Shawn had a good relationship with her now .