https://www.ancestry.com/name-origin?surname=kregnik 🤔 apparently it's a surname. Maybe Kregnik is the government leader holding everything together
I can't find any Wendy Wolf toys on Amazon or eBay. Stickers, at best. There are one or two sets that feature one or both of the Wolf parents, but I can't find any figurines of Wendy Wolf herself. I also don't recall seeing any Wolf family merchandise in Peppa Pig World (Shanghai), but it was mainly Pig family stuff there anyway.
Wendy Wolf is a pretty minor character, coming late in the series and appearing only occasionally (unless things changed later on). So for one thing, your daughter has fine taste, and for another thing, the character in question may have little to no associated merchandise, sadly.
I did find this out-of-stock Wendy Wolf Weeble on Amazon India. If you could find one of those in your region, you could detach its head and try to Frankenstein it onto a character with not-too-dissimilar colours, like Danny Dog.
Or buy a Danny Dog altogether, and Frankenstein on the ears (and tail, if it comes with a tail) from a Wolf parent. The greys don't match, but options are pretty limited.
I like to use this highly complicated app called 'Peppa's Paintbox'. It took me a few years to master it, but once you're skilled enough you should be able to make masterpieces like this. Good luck becoming a PsPB master!
( https://play.google.com/store/apps/details?id=air.com.peppapig.paintbox )