Here's the log for before:
Frostwyrm
Frostwyrm Lair:
┕ Eggs Nested, Total: 15
┕ Kips, Total: 104
Besci:
┕ Times Encountered: 97, Non-hostile
┕ Days Pregnant: 27
┕ Times Gave Her Belly Rub: 13
┕ Times You Bred Her: 12
┕ Times Breeded by Her: 4
┕ Times She Fucked Your Ass: 3
┕ Times She Gave Tongue Bath: 8
┕ Times You Gave Her Oral: 5
┕ Times You Have Eaten Her Out: 3
┕ Times She Fucked You With a Savicite Cockring: 2
Nykke:
┕ Days Pregnant: 31
┕ Times You Had Sex: 37
┕ Times You Fucked Her Vagina: 8
┕ Times You Fucked Her Ass: 3
┕ Times You Fucked Her Ass Cowgirl Style: 3
┕ Times She Fucked Your Vagina: 6
┕ Times She Fucked You With a Savicite Cockring: 3
Nykke & Besci:
┕ Times You Had a Congaline Threeway: 3
┕ Times You Had a Devil’s Threeway: 4
┕ Times You and Nykke Gave Besci a Double Boobjob: 5
┕ Times You Had Double Cockring Sex: 2
Alrythe: Met him, Given him Throbb
┕ Talked About: History, Kinks (4 times) and Throbb
┕ Times You Had Sex: 10
Then after visiting and having sex:
Frostwyrm
Frostwyrm Lair:
┕ Eggs Nested, Total: 15
┕ Kips, Total: 104
Besci:
┕ Times Encountered: 97, Non-hostile
┕ Days Pregnant: 1
┕ Times Gave Her Belly Rub: 13
┕ Times You Bred Her: 13
┕ Times Breeded by Her: 4
┕ Times She Fucked Your Ass: 3
┕ Times She Gave Tongue Bath: 8
┕ Times You Gave Her Oral: 5
┕ Times You Have Eaten Her Out: 3
┕ Times She Fucked You With a Savicite Cockring: 2
Nykke:
┕ Days Pregnant: 33
┕ Times You Had Sex: 37
┕ Times You Fucked Her Vagina: 8
┕ Times You Fucked Her Ass: 3
┕ Times You Fucked Her Ass Cowgirl Style: 3
┕ Times She Fucked Your Vagina: 6
┕ Times She Fucked You With a Savicite Cockring: 3
Nykke & Besci:
┕ Times You Had a Congaline Threeway: 3
┕ Times You Had a Devil’s Threeway: 4
┕ Times You and Nykke Gave Besci a Double Boobjob: 5
┕ Times You Had Double Cockring Sex: 2
Alrythe: Met him, Given him Throbb
┕ Talked About: History, Kinks (4 times) and Throbb
┕ Times You Had Sex: 12
I've narrowed it down: It's the Devils' Three-way, with Steele as top, that does it.