"...have you been alone all this time?" That's both heartbreaking and proof enough of his statement- not that she'll want to hear it. There is a time and place for everything, and this is a rationalization, a realization that is...uncomfortable. Rey isn't a child, but he remembers well enough Anakin's distant description of his master's probing, pushing for proof of what the readout told him.

Waiting for Rey to find a thought to cling to takes time. And of course, she clings to the most obvious one. "Rey- if no one else on Jakku was Force Sensitive? They wouldn't. Jedi perform overt use of the Force, those unfamiliar do not know the more subtle intricacies. I do hate to say that if you were far beyond the Order's ability to find you and help you? It may be for the best that no one noticed. There are...troubling realities of the galaxy concerning Force Sensitive children."