I wish Ты happiness, Любовь and great things to come! It's going to be really hard to come close to what Cheri & Arianna wrote, but I'm going to try :)
I pray that Ты feel better, and that your luck starts to change. I hope Ты know how much I care about Ты & how much Ты mean to me. You're the kind of person that does everything for everyone else and ask for nothing in return. Ты have such a kind сердце & soul. I am the luckiest girl in the world to have a sister like you! There's nothing I wouldn't do for Ты или to make Ты happy.
Never change, sis. Ты are the best sister a girl could ask for!
I Любовь Ты so much, sis!
Your sis, Brittany