She looks the healthy in that photo, even if she should be bigger. As long as she is healthy and happy, that is the main thing The pellet brand you are giving her seems to be a brand, like @JBun said, that is sold in mass stock. I would find a better pellet Brand that gives her all the proper nutrients She looks really happy and healthy though, so it looks like you are doing really goodI have a 3 month old flemish whom only weighs around 4 lbs.
She gets unlimited hay and 1/4 cup pellets per vet and breeder recommendations.
But others say give her UNLIMITED PELLETS!!
But I worry about bloat...how do i.know what is right!