Thanks. That's what I thought, but it's always worth asking. She already gets the nursing contribution - £109 and some pennies per week and I'm waiting for the forms to arrive to restart AA. She also has about £400 left out of her tax allowance, so thanks Nitram, we can at least claim some tax back.
Interestingly, DWP have been very unhelpful on the phone and I stumbled across a thread on MSE this morning where people were reporting difficulties getting AA and, even, having it withdrawn.