Spanish Translation
Ella os traicionó.
Shouldn’t it be “traditi” or “tradite”?
It should, but in practice, Italians frequently do not bother.
Search engine results show that vi ha tradito is as frequent as vi ha traditi/tradite. 
Ella os traicionó.
Shouldn’t it be “traditi” or “tradite”?
It should, but in practice, Italians frequently do not bother.
Search engine results show that vi ha tradito is as frequent as vi ha traditi/tradite.