Hereto... I do remember I answered your painting post. I'm not suggesting that you do smell, but it's possible that you do, whatever your personal hygiene regime. I think I'm really saying that you are being judgmental about another and not interested in her outlook. It seems to me that you don't get on, and so you should try to change your situation. I can't tell you how; just do something about it. Sorry I can't be more helpful. I was your age many years ago, and I just had to muddle through without getting advice from a glorified typewriter. What would you do if you had to walk down the road looking for a phone box, waiting outside until some idiot had finished shoving coins in so that they could continue haranguing or pleading with their interlocutor?
You're a big girl now, and you can get through this. Best wishes. :-)