Is my wife automatically responsible for her brother's mobile home if he passed away without a Will and no other relation?

Question Details: My wife's only sibling, her brother, recently passed away. Both their parents are deceased and he had no wife nor children. He had virtually no assets, except a dilapidated mobile home that he lived in. Per state intestacy succession, my wife is in line to inherit the mobile home. She wants no part of inheriting the mobile home. At this time her name is on no title nor contracts. Who is responsible for lot rent and utilities where mobile home is parked? Does she need to file a disclaimer that she doesn't want the mobile home? If so, is there a standard disclaimer Iowa form and procedure?

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