Someone who can create at their will yet not a god... doesn't sound like anything she's really heard of, but she'll take his word for it.

"An unusual mage then. It would be easier if I knew your name, otherwise I'm going to start having to call you pink-haired Kaeya."

Just so she can catalog him under people to keep a close eye on in case his powers do come back, not that it matters much anymore. With Mondstadt gone, what is there to protect? She's having enough trouble deciding whether she cares if this world goes under, too. It's not that she's eager to die... but if there are more of her allies underground, waiting to resurrect, she should at least stick around to help them.