Hi, thank you for your question. If the property used to be used as a home for both of you during the relationship (ie. you shared it) then housing benefit cannot fund the rent.
However, if she is paying or liable to pay you rent for a property where you never lived together then you may be able to receive housing benefit to cover her rent however the local authority will have discretion to refuse housing benefit as you used to live together as a family. Furthermore, if you have children who she is still responsible for then you will not be eligible to receive housing benefit to cover her rent.
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