What sorts of things has she been eating? Maybe there is one particular food that is causing her to have more BMs. My boys have always been frequent poopers, lol, so it can be normal, but I do find that certain foods make them go more often, like some fruits or things high in fibre.
You can try offering her maybe some banana for a few days to see if it slows things down a bit?
I don't think there is immediate cause for worry but maybe keep an eye on it and also what she is eating to see if you can figure out what is causing the more frequent BMs. Otherwise though, if she is happy and gaining weight she is probably fine. Maybe bring it up at her next doctor's appointment.