Most youngsters in Britain by her age would be into boys by now but looking at her she still seems quite young looking.
Also thinking of the photos of 2 years ago all the Cheney grandchildren are dressed to what I would appropriate for their age which would indicate to me that they are encouraged to be children and not young adults for as long as possible.
However she must be about 13 so she maybe into boys
Yes, that's about the right time for girls to begin noticing boys.