Crossing a male auto with a female auto will get more auto seeds. But if the autos are siblings then you will get F2 seeds, which tend to produce more pheno variation. I'm not sure what to expect from an F2 auto.
rephrase the question in proper english and i can help better lol, two females will only carry XX chromosomes in their dna so breeding them will only give XX plants via the basic rules of inheritance (all female... a least geonotypically speaking) once you cross your male XY to a female XX youll get progeny of either XX or XY so males and females aka a regular population