Females can ejaculate too I honestly don't know if females have to even do ghusl after masterbating because according to the teachers at school the fluid they have is the same as the stuff in your nose snot but if you did have to do ghusl after masterbating then either way u have to do ghusl because you had a wet dream and even if it was not a wet dream u masterbated but so yea if the scholars have ruled that females must do ghusl after masterbating then you have to since either way you emitted sexual fluids and if the scholars have ruled that females do not need to do ghusl after masterbating then no need to do ghusl alhu Alam