When she encounter Klaus - the one and only time she has - he spoke Skiff. The wasp cut him off while he was saying Zanta(braxus). https://www.girlgeniusonline.com/comic.php?date=20061201#.YZw0adDMLIU Later, Gil tells her his father told him someone like her might have been sent to kill him. At that point, Zeetha starts to put thing together.
If she has guessed Gil is her long lost brother, then I think she has guessed that Klaus is Chump.
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https://www.girlgeniusonline.com/comic.php?date=20061201#.YZw0adDMLIU
Later, Gil tells her his father told him someone like her might have been sent to kill him. At that point, Zeetha starts to put thing together.
If she has guessed Gil is her long lost brother, then I think she has guessed that Klaus is Chump.