You have people that say all sorts, but at the end of the day every dog is different so only time will tell. Some females get along, some don't. Some males get along, some don't. Just like some males and females sometimes don't get along either. I know plenty of people who have more than one female dog with no problem. Just wait and see how it goes. If problems arise then you can deal with that in time, but don't worry otherwise. It may end up totally fine.