Couple questions. Second year of deceased mom's taxes.

Hello,

My mom passed away just over a week into 2024.

There is neither tax due or a refund on the returns.

I've already e-filed the Federal, and now want to mail in the Michigan return.

 

Couple questions about the Michigan return:

-As I understand it, I don't need to sign it anywhere, since there's no refund or form MI-1310?

-I sent them her death certificate for last year's taxes. Should I bother sending in the death certificate again?

 

Thank you.