She's just not that interested. How do you tell that to someone?
It's tricky - especially if you're reading someone's chart and you can tell by the look in his eyes and the still way in which he's holding himself, that this is really important - and the chart, well, it's ambiguous, it could go either way. You hope eventually that he'll realise the truth for himself - or, and this does sometimes happen, she'll get interested. You need to give him a steer, but without being too brutal - because - and this is the nature of astrology and of life - things do change.