If the only other kids on her level have that much more experience then she must be more naturally talented, in a way "better". I haven't' been around many kids but she seems to posses coordination and athleticism that must be uncommon for a 10 year old.
Eddie is always pushing for youngsters do wrestling, we had it starting in 4th grade where I lived. Will Cora be wrestling, because she is sure to be a force in that sport as well and it can only make her jui jitsu stronger.
your daughter is amazing, i'd rather pay to see her than many pro fighters.