Hopefully its not too long a drive. But you are probably right then. If you could take more than one you might improve your odds. Or wait a few weeks and see about getting updated photos. Unfortunately I have had more than one chick surprise me at that age. That said, I think your daughter could...
Hopefully others with more experience than me chimes in, so take my answer with a grain of salt.
But I only see one that I think is most likely a cockerel. That said, pullets can be a bit tricky to sex at this age and from these pics. I've had RIR and BR pullets that looked very similar to a few...