I am 27 and my sister is 17. We are absolute opposites. I mean, we are so completely different we are like a storyline from a mediocre chick flick.
I have always been very academic, I am 'typically' girly in that I have long blonde hair, love make up and fashion and I live in what my sister calls 'suburban hell' with my husband and daughter. I have my own business and my husband is a lawyer.
My sister on the other hand currently has green hair and considers herself a 'punk'. She is in a band, not academic at all and flat out refuses to get a job. We have absolutely nothing in common and she is very disparaging about mine and my husband's jobs as we are part of 'the capitalist cycle' apparently 
I do realise that much of this is just general teenager stuff but we've never seen eye to eye.
So despite her apparent disgust at my lifestyle and endless commentary on it - she does still want to spend time with me. But I find this tricky. She finds it funny to get my daughter to say things I don't like, she wears clothes that she has 'decorated' with fake blood and she owns a t shirt with a swastika on it which does say 'fuck the Nazis' but still,I don't want to go anywhere with her when she's wearing this stuff - but the worst thing is she just slags off absolutely everything about our lives and if you question her on it, she loses it and feels 'bullied'.
My mum says she keeps on about coming to mine but I'm avoiding her because I find it so difficult. I do try and take an interest , I buy her tickets for concerts and organised a friend to let her band record in his studio but when it comes to being around her, I struggle.
Can anybody offer any advice? I know it makes my mum sad that we aren't particularly close so I would like to try and remedy this.