IP Ban means it blocks ANY minecraft (or other game (if it works xD)) account from joining a server, even if you joined for 10seconds, the account will be linked to that IP address. If you want yourself AND girlparty unbanned, purchase a unban for the account rayqyaza559 :D
Hi, there is no possible way of proving that this account is your sister that is possible that won't physically put you in danger, you may purchase a one time sanction removal here. Please note: Purchase an unban for the offending account and not for rayquaza559.