Late blooming boy or fast developing girl?

Well, the title basically says it all. I had no trouble sexing his/her 4 full siblings, but this one so confuses me. Beware, lots of pics.
Here's a 3 week pic
4 week pic
5 week pic

And now the 9 week pics. These are current.

Here's him/her on the left, next to his/her sister.
This is him/her preening Him/her left middle, sister Ivy in the back and sister Lilac in the front.
And hin/her on the log behind Raven, who's the same age and all boy.
Thanks in advance! Curious to see what all you experts think. @Overo Mare @TheOddOneOut @Gray Farms @Rhodebar Lover

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