hi Joy it has been my experience all females are different so it all depends on your little girl I have found my females begin interest within about 5-7 days in, but the male still wants nothing to do with her until he thinks she is ready (isnt that just like a man

... best breed times usually 9-14 days in.
Best way to tell when your female is ready pet her bottom and see if she sticks her little tail and hiney in the air, so to speak, as she comes closer she'll start putting her hiney into the males face to get his attention if by chance he's not paying attention.
hope this helps.