Swedish translator please...I think my sister is failing school? Not sure, cant understand all of it?

No, she's not, as you can see from the translation by the guy above (which is correct). But why not simply ask her, instead of publishing her private mail on the Internet for the whole world to see? I'm sure you wouldn't like it if she spied on your mail and then published a letter on Yahoo that you wrote to a friend. Your sister seems to be a native Swedish speaker, by the way. The language is not only perfect and fluent, it is idiomatically correct, with a few typos that only a Swede typically would do. Funny that you don't even understand Swedish, if she really is your sister. Were you raised in different countries? But whether she is your sister or a room mate or someone else, you should respect her privacy.