Ran out of females on virtual villagers 3 app?

I have been playing Virtual Villagers 3 on my iPod touch for a while now and I just revisited (internet went down for a while) and I only have 2 males left! Is there any way to get a female somehow? Also I just had another male join and he came from a boat that arrived. Can I help the game do this again but with a female? Any help please, thanks!