She remarks on how much he has grown, hinting that she may have known him when he was younger.
She is also given a new back-turned string ender that can not only refloat foes in juggles but is also safe and gives her a reliable way to remain on the offensive after being blocked while facing away.
The rest of their relationship is based around their own relationships with Donovan; as Christie still works for Donovan, Bayman sees the woman as an enemy.
It is hinted that the both of them may express slight enmity to each other.