Go for it! Take her out and do it. You can and I'm sure you'll do a
good job and have a wonderful time together. It is great being able
to hone in on their individual interests but I would encourage to
have some idea of stucture and progression that you want to follow
simply so you can monitor her progress. Keeping a brief diary of
what you've done is helpful as a record of work for the LEA should
they inspect what you're doing, plus you need to be able to show her
work. Two hours of consistent work one-to-one is the equivalent of
what they would cover in school. I use a structured syllabus to do
that two hours worth of work, with my children and then the rest of
the time I do all exciting extras that are interest specific with
them. That way I know I've covered the essentials and am not leaving
any gaps. I don't know how parents educate without a syllabus
because it would seem to me to be very labour intense with
preparation etc when there's a home to keep aswell. But research
shows that children who are educated without a set structure and sort
of left to discover things themselves are still better off
educationally than their peers in school. I couldn't do it without a
syllabus - and I'm not using National Curriculum - but then I've got
four being home educated!

But let me encourage you to do it.

Emily