H4 VISA and I94 got expired, can she stay with my valid H1B

when my wife was in India, i switched the company and got my extension till Mar 31, 2021.
she travelled to US with my previous employer VISA during Dec 2018 and had valid stamped VISA and I94 till Aug 2020.
After that i forget to apply for her extension and thought that she can stay with my valid petition.
Can she stay ?
i am applying for my extension in Mid of Jan, will it be ok to apply her extension along with mine or i have to get H4 I94 updated to mar 2021 by exiting US and entering again. Could some one suggest on this