You, personally, have no obligations to pay your mother's debts, and that includes the mobile home. Debts of the deceased are paid out of their estate. If there was no estate or the estate was insolvent, then creditors get nothing.
The lender for the mobile home can repossess/foreclose on it for non-payment. If the ownership of the mh passed to you on your mother's death, then you've to pay what's owed. You can stop the process if you file for bankruptcy, but if you can't make up the payments in a Ch 7, you would still lose the mobile home. You might be able to keep it if you file CH 13, but then you must have a steady income to make the plan payments.