Why do people always forget man + female child.

Talmud (Jewish book of oral law) allows for marriage as young as 3 years and one day.

Also, you got Deuteronomy wrong.

First, the female is not just any female, but a na'arah, which is a pubescent female, tended to be around ages 12-13 back then, but I believe is strictly defined as a female with two pubic hairs (and shaving doesn't count). The period a girl is a na'arah lasts for around 6 months, after which she reaches a new stage (which name I forget). In the new stage, if her father has failed to arrange her a marriage, she is given the power to pick another male in the community to arrange her marriage (very liberating... sigh).

Next, the word used isn't rape, as there is a separate word used for that. It is actually two different words, one of them being for consensual sex, the other being for seizing/claiming. So 'kinda rape', which when you combine it with her age, is probably best counted a statutory rape.

Finally, this only applies if her father has failed to arrange her marriage. If she is arranged to marry someone else, and is 'kinda raped', then the guy is put to death.

Now, normally if a married or engaged female consensually has sex with someone who isn't her husband or husband to be, she is put to death. But because this verse is defined as not only including rape, there is a chance that if a guy basically seduces a preteen arranged to be married, the girl is not put to death (but the guy is). That said, I am not sure of this.