https://www.pixiv.net/member_illust.php?id=2532867
That's the link the artist's Pivix. Unfortunately, their original site is down. While the Pivix has a lot of good stuff, many are just stills with links to the original site, This one included.

If I remember right, this one continued with another stab or two, followed by some viscera slopping out of her cunt. It'd be a shame if it was lost forever.