This is, hands down, the highest-effort and most polished character mod I've ever played.
While most characters released for SRB2 typically deviate from established gameplay standards to pursue unique mechanics and ideas, Gemma meets and sometimes even exceeds vanilla standards. This makes her feel right at home with the main cast, while not being too simple nor too flashy.
The fact that you went out of your way to animate every single possible frame that a character would ever need is, quite frankly, incredible. I really want to hammer in my absolute satisfaction with how the character is executed, with the sprites being on-point and the ability being easy to pick up while being advanced enough to do cool movement tech with.
Great job!