Oh what is it now? Perhaps Ianto's prolonged injuries are starting to affect his mind as well, how sad that would be. Or he really is just profoundly confused by something she thought was very straightforward. Being the more pleasant and more likely options of the two, she decides to assume the latter and frowns at him, letting the Doctor's image fade.

"Was I not being clear?" Perhaps he just needs a little more context. "A scientist named Iman Asadi brought him a child the day after he arrived. They had previously met in one of the rift-facilitated inter-universal dreams, and since she had just arrived, he decided she ought to live with us. He is already quite attached to her." But not in any way the TARDIS has reason to mind. Especially since the child is a tolerable inhabitant.