Well for starters, it's helpful to know/realize what is plotted month-by-month is Angie's mean maximal normalized power for 60 min, i.e., what she actually did, which isn't necessarily the most that she could actually do. ... so I simply used 1 h normalized power as an estimate of changes in her functional threshold power over the course of the year.
Anyway, while I'm 100% confident that she could have laid down 270 W for 1 h earlier that year ..., when longer intervals were the emphasis of her training, I don't know if she could have sustained 290 W for 60 min when peaking for the pursuit.