Sounds like potential help to me as learning by doing can be very beneficial. Though I'd agree it's probably worth finding out what aspects she's interested in, and then start there.
Thing I'd say though is no matter the age, if a person is new to it don't expect them to know or be much more of a help (initially) than you would expect from a young child.
I say that not to be harsh, but just as something to keep in mind since in a lot of ways if it's something they've never had experience doing then they are a lot like a child in that regard and expecting more out of them than you would from a young child will (sooner or later) cause frustration and problems all around. I've been down that road before, it's not fun.
So I've learned to treat them with the respect due an adult, but not to expect more out of them than they have demonstrated they know how to do. ...which is frequently easier to say than do (especially if/when the person is older than you are).