Wrong Katia i think. According to the official website of Devil's Films, the "Katia" appears in 4 titles:
Cream Pie POV #03
Reverse Interracial Gang Bang #01
Big Toys No Boys #04
Big Black Beast #02
Here you can see small screencaps for all 4 titles. According to the molds on her stomache that girl is
Krystyna C
Unfortunately the screencaps for BTNB4 arent very clear, you can only see Niki Dark and Julie Silver, and Katia from the back. However, there is 1 pic of her which shows the big round earring with Kristyna C always wears, and a large mold on the left of her throat. So my guess is that this katia = Kristyna C.
Niki Dark also appears in this movie, but has no entry on EBI for this movie yet.
And while we are updating BTNB4... Joana Redgrave appears as 'Vanesa', an alias which isnt in Joana's profile yet.