HI Troy,
My sadness to you. I am sorry for your loss. How many years do you know she had the side business? You may need to amend prior years to report the income. Based upon the information, it appears to be a 1040, Schedule C which turbo tax can do for you as well. If you are filing married joint in those prior years, then you will amend with 1040X and still indicate the same marital status. Hopefully this helps.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"