Quite like most other commercial ciders, sweet.
Gonna be hard to replicate, but with enough additives and non-fermentable sugar should get you there.
Personally, try and convert her to traditional dry style ciders.
I can barely drink a cider when i'm out anymore, I've become so used to my own dry ciders, that even the dry varieties from proper boutique brewers ar getting close to too sweet.
I managed to lay my hands on some juice from Cox's Orange Pippins and it stays naturally sweeter, even when brewed out fully dry, I guess why it's one of the Apples of choice in Local cider production