mytake- I couldn’t agree more with you! I’m a huge fan of Gila Manolsons books, and strongly recommend them to anyone who feels they need a chizuk boost in tzinius.
(I found that her books had a much stonger impression on me then R’ Falks book- which was the primary tznius sefer tought in my school. R’ Falk sefer mainly focuses on halacha aspects, and i believe that to truly internalize tznius you need to hear more than just a list of rules….)