If she borrowed money to buy her home, it's a residential mortgage or housing loan under the Consumer Credit Act. There are a few protections for people in arrears and they cannot charge an early repayment penalty on it if it's a variable rate mortgage.
If she borrowed money for a business or to buy a commercial property, but secured it on her home, it's a grey area. The banks regard this as a commercial mortgage. But I think that the last Central Bank Act redefined loans secured on homes as covered by the Consumer Credit Act.
You really would want more details.
You can't simply ask your bank to change the status of the loan. The original purpose of the loan dictates its status.
Brendan