I'd look up, say "Chen? Where?" right before a certain cat youkai comes spinning into my head, resulting in my going pichu~n.
I'd stare at her hat for a few moments, looking to see if it could trace my movement. Shortly after, I'd get bored and offer to go drink some sake with her, then at some point ask her if she used that body when she gave birth to Sanae's ancestor.
What would you do if you met "Fluffy" Ellen?