why dont you need to say "she"? is it because velka and mala are gendered?
Personal pronouns in subjects are normally optional unless stressed.
I wrote "Je není velká, ale malá" and was marked wrong. Is "she" not required in this sentence?
"She" is not required. But your answer is wrong. You wrote "Je není". That is the same as "Is isn't". It is a nonsense.
I see, so it should have been "Ona/on/ono neni." Thanks!
Whats the difference between neni and nejsi?
není is third person (he/she/it is not), nejsi is the second person (you are not)