Quoting Samanthaaaa ♥:" <blockquote><b>Quoting .Sam.:</b>" Oh that's smurffy Maybe with tomorrow being Thanksgiving ... [snip!] ... situatuon so when somebody gets me started on it I vent wicked baaaaad. Ugh. I literally feel like I'm going to puke now."
Don't get all worked up over it. It's not like you freaked out on her and told her how annoying she is or anything. Honestly, I think anyone would be annoyed with living in that situation. When you have a family you want to live with your family, not including an extra person.
Maybe do something nice for her? Like wash a load of her clothes for her, fold them and then write "love you" or something on a note and leave them on her bed just to let her know that you aren't mad at her.