Rory asked Ian to get her a picture of Lennon's birth mother--Aurora Caroll. Ian said that it would be hard, but it won't be impossible. She thanked him in advance.
Rory had only seen the pictures of Roisin Walsh and nothing of his birth mother. From what she remembered from Ian's investigation; she had a feeling that his birth mother might have been the one who screwed him up.
She has a feeling that his birth mother might share her appearance. It was just a hunch that she wanted to confirm either way.
The reason she had the hunch was because of the obsession Lennon had with her. She is the one he treated differently, along with Liam's mother.
Liam usually kills immediately after having his way with them. But with Liam's mother, he let her be and watched her drown in misery unable to even look at her child. He relished her pain and waited until she decided to live to kill her.
