Kate(can not) read and write until she was six

Question

Kate(can not) read and write until she was six

Answer 1

Кейт не умела читать и писать, пока ей не было 6 лет(cannot вместе пишется)

Answer 2

Kate cannot (cant) read and write until she was six
Кейт не умела читать и писать до шести лет