User blog comment:Nomad27/Predictions of what will Occur in Volume 10./@comment-5.156.38.202-20151226095446/@comment-5480911-20151226171216

The Level System that NW uses is like D&D your levels rise depending on your racial and job classess....after Ainz gave her the horns of the goblin general she got the job class Seargent, commander and General....before she was just a farmer at lvl 1...now she is level 6......Human and Demi Humans don't have racial level it is always level 1 but they can get more job levels and in turn level them up...thats why enri went up to lvl 6 and those was at volume 8...after the events of volume 9 and with her new goblin army i would imagine her level is higher now.