It could be those hot bumped and she will molt them out and replace them.
For myself I'm not seeing anything concerning.
It is good to pay attention, and welcome to the worries about our babies club, I'm a longtime member of said club myself.
Some things that are good practices, getting a digital kitchen scale and weight check in grams weekly. As most birds with health issues start to loose weight before other symptoms. And when caught early by weight loss and taken to the vet are easily cured for the most part. You look for downward trends. A 4% body mass loss get to the vet for a check up.
To calculate take # of grams lost ÷ normal weight in grams × 100 = % lost.
Example your birds wreight is normally 72 grams it looses 5 grams
5÷72= 0.69 × 100 = 6.9%
6.9% definitely sick/health issue get burds to avian veterinarian.
Diet is important to health. Feeding a variety of veggies provides needed vitamins and nutrients, with fruits being only 10% of diet. And fruits and berries of deep colors are better, pomegranate, black berries, cherry ( fresh only)
Occasionally offer boiled egg with a but of the boiled shell.