Section 8 Tenant has not paid tenant portion

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Our section 8 tenant had a death in the family, and unable to pay this month's tenant portion. As a new investor, I wanted to begin prepping for what to expect going forward. We did issue a letter (reminder) of payment, but nothing else since. I've heard that the tenant can get assistance from HUD to pay their portion but not sure if this is true. Does anyone have general advice here?