Have you considered a Kimber deluxe body and a WM head?
She may be a bit too big on top, but she is listed at 29kg
https://kimberdoll.co.uk/products/kimber-doll
There is a one page of WM heads here, any of the reputable UK vendors should be able to order one for you
Tighes1 has two WM headed Kimbers in this thread
https://www.uklovedollforums.co.uk/f...ad.php?t=13856
and Psion has a thread of a complete Kimber
https://www.uklovedollforums.co.uk/f...=croft&page=12