I suspect/fear that she has more outgoings than the £4.8k, just the £4.8k is fixed/mandatory eg mortgage, council tax, minimum card payments etc. So she’ll be cancelling discretionary bills like cleaners or Netflix.Cancelling bills - what bills would they be, everything was essential ?
How does she propose to rent her house out for more than the size of house she ideally requires. Such a risk to rent out your own house whilst paying rent on another one esp without any backup savings .