Loud phase bug- help save the lives of two sims

I found that my sim got over her Loud phase when she aged up. Then again, speaking as a guy who's been a metalhead since I first heard Metallica's Black Album when I was a freshman in high school (and whose working-class New England upbringing is often reflected in my vocabulary when I'm annoyed), I suppose the Loud trait never truly leaves even in real life, so...