Hi, I'm 19, I have 2 older brothers (25,21) and a younger sister (10). I moved out of my mothers house when I was 17. Both of the older ones have moved out aswell. My mother expects me to look after my little sister every 2nd night of the week sometimes every night, as she works a night job and refuses to get a day job. So she texts me and says "you have have .... tonight please pick her up after you finish work" does not ask, tells me. And i live 30 minutes from her house. She does not push this responsibility on my older siblings infact she lends them money and does whatever whenever but I get nothing except treated like a baby sitter. Dont get me wrong I love my little sister but I have my own family and own life, I have a significant other of 4 years and a baby on the way. My mother refuses to drive my sister to my house so I have to make the trip in if I'm not working, she says it's too far, my brothers both live within 10 minutes, why not ask them to have her?

I'm getting really fed up as I can't do anything with my SO because we are basically raising my little sister.. where do I stand...? If i say i can't have her she goes wild and tells me I'm a useless piece of shit and i end up cancelling my plans to have her the night...

Edit: my little sisters father is not in the picture, messy situation.