[LE] Using a custom voice from one mod for an NPC from another

[ItsDaPervert]

Specifically, I want to use triptherifts teen voice for a follower from another mod I forgot the name of because she has a really unfitting vanilla voice. As both the original mod for that voice and the original Sassy Teen Girls mod were taken down, I downloaded the German translation of the latter (https://www.nexusmods.com/skyrim/mods/83112) because it apparently contains the voice. That mod itself works properly and so does the one I want to change.

But when I change the voice type of the NPC to TeenVoice in the CK (using Sassy Teen Girls as master file or at least attempting to do so) it doesn´t work in-game. Instead, the NPC´s voice changes to FemaleEvenToned (like for example Lydia). TES5Edit tells me

"FormID [0200080E] references a master which is not availiable in file [03] PovFollower.esp" ( Sassy Teens was [2]) when I try to change it that way.

What I tried to do is unpacking the .bsa file and adding the sound folder manually to PovFollowers folder in Mod Organizers mod directory because that one itself consists of a bunch of folders rathers than an actual esp. Didn´t work either.

I hope you guys here can help me out though I have a feeling that the solution is rather simple and I´m just being incompetent as always.