Good Luck. I hope she will take Kitten for you. I had a FF that had twins and she took a orphan for me. I took the baby right after she kidded and I wiped her all over the mom's rear end to smell like her and she took her with no problems.
I'm not sure if it's just the angle of the pic but it looks as though her "knees" are pointed slightly outward....so with that pic..I'd say she's not posty yet.
I do have to say that the video really made me about p myself! I have girls that slide on their bellies but none that back up and scratch their butts!! Her udder doesn't seem to be "tight" as yet...and theres definately twins in there!