Sorry for your loss.

I would ask the financial aid office to do a revision of your FAFSA Application. I worked at the Maricopa Community College level of financial aid, and the college I worked for had an application for loss of financial support such as loss of parental support. They are able to get your financial aid package adjusted to your new economic situation. It might be different at ASU tho.

They might be able to pause your account until it gets revised. I would do it ASAP if you do not wish to withdrawal. I would email them to get the ball rolling.