Request inputs on below.Thanks

 I  am planning to file a federal tax return as Married filing jointly and state tax as  Married filing separate using the below steps

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-prepare-a-joint-federal-return-and-se...

1 The link details how to file joint tax return and separate tax returns but it does not clarify when filing state tax return for primary which federal return should be attached to state tax   Married filing joint federal tax return or Married filing separate Federal tax return?

2 Do I need to paper file state return ?

3 I am resident in IL and my spouse moved out of IL in July 2021to Canada. She was not working when she was in IL and the only income she has is from bank interest which is around 27$. Does she require to file a state tax return? Should state return  filed as a part resident for her