Moved and worked remotely

Hi,

 

I need help to file my tax return with my situation. 

 

I was working in CA and my wife didn't have job until she found one in NJ.  She moved to NJ and started to work on 1/16/2020 in NJ. Later, the pandemic kicked in and she returned to CA on 6/26/2020 and worked remotely for the same company in NJ. Her company didn't help her to change the tax withholding. I didn't move and worked for my company all the time in 2020 in CA. 

 

I think my situation doesn't affect the federal tax return (correct me if I am wrong). However, I don't know how to handle the state tax return. Could anyone tell me how to do it? Thank you!