In the circumstances outlined by the Deputy, the lone parent in question would normally continue to qualify for both the lone parent's allowance and child benefit payable in her case. Arrangements can be made to have both of those payments made directly to the person caring for the children while the recipient is undergoing treatment in a hospital or other medical institution.
If the Deputy provides me with precise details of any specific case(s) he may know of, I will arrange to have the matter examined and the person concerned informed of the procedures involved in nominating her mother as her agent to receive the payments in question.