Ians relationship with her mom is complicated, on one hand she loathes her mother with every fiber of her being for bringing her into this world to experience the pain she has. (She also equally hates her dad who skipped out) But on the other hand she knows her mother is the only reason she is still alive right now even if she hates to admit it, and Ian hates that reality which kind of just circles back to the first reason and loops. So she begrudgingly puts up with her parent.