see all of those white hairs in that one spot?? they are the begining of buds, known as pistils, and males don't bud, nor do they have pistils, there for he is a she..
you can really clone any time you have a branch that is big enough to clone.. i'd say about a month or so from seed would be big enough to clone from...
and cloning is no different then taking a cutting from a house plant the way your wife probably does it..