thoughts for today

My cousin treated me and my sisters for haircuts today. I am really happy with the way mine turned out! The girls' haircuts look awesome too... they're just not as happy about it haha. I think they look great, but I'm just the older sister so I don't count. I am really worried about my sister... I think she may be Bipolar, but I can't say that to my Mom because when I do, she flips out. She can have the highest highs and be really happy and than all of a sudden, she is deeply depressed. This can happen in a matter of seconds! She just flips! Totally different person in minutes. I don't know what to do! I am freaking out because she doesn't know whats wrong and I don't know and Mom wont accept that she may be bipolar or depressed. When my Dad passed away 6 years ago, we all went through it differently. I've been depressed recently, but I feel like my sister has something else going on. She is not doing well in school and she doesn't seem to care about anything anymore. She doesn't hang out with her friends anymore and she goes into her room and sleeps or just stays in there by herself and I can't get her to talk to me. I worry so much about her. I don't want her to be depressed. She is young and has a whole life to be living out and she is sitting in her room. I want her to be happy. :[