Ok with episode 6 we kind of learned that a soul gem works as long as it's withing 100m radius of the girl's body now. Also, Kyubey is still hoping to get Modaka's delicious delicous soul still. Although with knowing that your soul is ripped out of your body to fight against witches now that is a concept that is new to me.
As for Homura we still don't know what's her deal, but the only guess is she's using someone else's body with her soul gem. that might be the only reason why Kyubey said she did and yet she didn't make a contract with her as of this episode though.
As for Homura we still don't know what's her deal, but the only guess is she's using someone else's body with her soul gem. that might be the only reason why Kyubey said she did and yet she didn't make a contract with her as of this episode though.