She's wondering if students got in a hurry and closed their Chromebooks what happens.
If they are working on a quiz, at the bottom of the quiz Canvas provides information about the last time it auto-saved. It auto-saves usually every time the student answers a question or types in a response in a text field. As long as the student doesn't exceed the time limit, students can stop and resume the quiz when necessary.
If you are talking about other assignments where students enter information into the rich-content editor- not at this time. You will definitely want to check out the "Ideas" below- one is "in development" and the other in "product radar"
Some solutions are to use the Google Drive/Docs (or LTI) which does autosave- or Deborah Bogard suggested this route if not using Google Docs/LTI:
1. Have the students type "NOT FINISHED" at the end of their entry and submit it. (That way, the teacher can see in Speedgrader that it is not ready to be graded).
2. Then when the student is ready to work on it again, click on the assignment and click "Submission details" to see their work.
3. They must Highlight and Copy what they've already done, then click the Resubmit Assignment button.
4. Paste the previous work into the new text box, and continue on. Submit with the "NOT FINISHED" annotation again if it needs further work. This can be repeated as many times as necessary.
5. When the student is ready for the item to be graded, they should type "READY TO GRADE" at the bottom of their work before hitting the "Submit Assignment" button.
6. From Speedgrader, the instructor has access to every submission the student generates, with time stamps. This gives nice snapshots into how the student's drafts progressed.
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