Last night, my sister completely screwed me over in terms of MSN. She somehow knew my password to MSN, something I did not know she knew. She got it from me being off the computer, but leaving my e-mail open. She got on and saw my password in some e-mail. So when some guy comes around being controlled by a bot and sends my account a link to "is-dat-you.com(I'd reccomend not going here)" . That site takes you to an fake MSN login box, where she promptly entered my MSN information, for some reason I don't yet know. Well, she gets off, and a few minutes later I come back. I don't suspect anything is wrong, so I get off. I wake up this morning to about five people asking what is wrong with me, what is that link, etc. Well I don't have a clue what they are talking about, until Josh asks me "How fucking stupid are you?" talking about me "giving my info to that site". Well, I found out some dude in Panama now had my info and was using me to spread its link all around MSN. Apperently, its a money making scam, but I don't know. I changed my password on hotmail to solve all the problems. Well, that should be the end of it all, except..

I need to to know what I should do to my sister for using my password to get on something I didn't approve of, and giving some random guy over in Panama my password. Any suggestions?