Who is Katie in Strzok's text?

https://saraacarter.com/sen-grassley-and-sen-johnson-letter-to-ag-barr-on-fbi-spying/

Strzok already told us …

Q3330

Chain of Command

Chain of Custody

PENCE' CoS + Wife

FBI 302's

FISA (spy) Flynn

Will newly discovered evidence (AG Barr - SDNY) FREE FLYNN?

Q

The Kate bottle = The wife of Pence's chief of staff.