Tracey
you are stuck I am afraid, this is a 13 week absence ruling and there is no satisfaction of the regs to elongate to 52. There does not seem to be anything that would allow you to pay beyond the 13 weeks.
sorry, I know it is not the answer you wanted, temp absence is quite clear and if there is no one else that can be treated as living in the property and responisble for the rent then you can’t pay anyone else there either!
If she were hospitalised it might be a different matter, but you say she is living rough. The family need to find a way to get her home, but you from a HB purpose cannot help her until she returns.
If she returns and is hospitalised, you will be able to start up again during the hospitalisation period, provided the rest of the rules are satisfied.
hope this helps