How do you know that the betta female is ready?

You know a female betta is ready when first of all the male has built his bubble nest. Second of all She has vertical stripes on her body like this ¡¡¡¡¡ not ------. Just if ya didnt know? :D And if she has a little white dot under her. I am actually looking right now for the same answer but its easier to go to google.com and type in your question exactly. Hope that helped ha ha