NoDictionaries   Text notes for  
... interiectis diebus mori iubetur, cum iam viduam se et...

Here "cum" means "although,"hence the imperfect subj.; the structure is "cum...testaretur...cieret: "although she testified/protested she was only a widow and she summoned her common Germanicus (ancestors)." "cieo" is 2nd conjugation, although it looks, to mean at least, like a compound of "eo."