
6 months between seasons is only an average of bitches as a whole; some will have a 5-month cycle, others an 8-month cycle, some an 11-month cycle; in fact anything between 5 and 10 months can be considered normal with longer or shorter durations being more unusual. How many seasons has she had before and what was the duration between them? If she's only had one season you'll need to wait till she's had three or four before you know what's normal
for her.