this mod was created using THBrows. the author updated the Nexus page with an extra file that makes the main compatible with LMCC; except this file DOES NOT work. (or if it does, then i'm doing something wrong but fu** if i know what that is at this point. not much i could be doing wrong in simply installing the extra file. and no, it doesn't come with a plugin i'm forgetting to enable. i checked that.)
now apparently (based off a post in a forum i found) Loving Piper is only compatible with THBrows 1.2. i can confirm because i've installed the 2.0 you have posted here and she's still showing up with missing eyebrows. and the author of LP doesn't seem to care about simply updating the main file to be dependent on Looks Menu eyebrows or making it compatible with TH 2.0. and the only other Piper replacer on Nexus is serviceable but not as good as LP, unfortunately.
so would it be possible for the main man over here to put up a download for the old 1.2 make? if he's even got it saved anywhere still..