User blog comment:Seishoujo/Next time there's a Q and A sessions.../@comment-24088073-20131109084214

A couple of answers -Jaune has the 'Sword and Sheath', Ren has the 'Jade Dragons', Penny, her weapons are still unknown, but are refered to as swords. Sun has the 'Gunchaku' -Ruby and Yang ARE sisters, but neither of them are adopted. Confirmed by Monty Oum.