my sister is still in the clan and im leader what should i do now
sadly you cant kick her out when you are the leader.
unless you don't talk to her at all after she is seen with sunfall. then you talk to her when shes leader and you can kick her out or let her stay
You can! If you saw her with Sunfall while you were a warrior, if you talk to her as a leader you can kick her out or let her have her kits in the nursery!