muhammeds purpose

[Metallica]

Can someone explains me
Surat Aţ-Ţalāq (The Divorce) 65.4 : "And those who no longer expect menstruation among your women - if you doubt, then their period is three months, and [also for] those who have not menstruated. And for those who are pregnant, their term is until they give birth. And whoever fears Allah - He will make for him of his matter ease."

and also all the hadiths telling that she was 6/9 and that she used to play with dolls, etc