Plz help me. Put a smile back in my life

I'm a 38 year old single mother to a beatiful 15 year old girl. I am struggling with depression due to everything bad happening in my life. I can just about buy food for us every month due to having to pay my rent, bills that I am slowly falling behind on. I work in retail and get very little money. I worry every day for the future of my daughter and my mum who is terminally ill and is on warfarin for life due to kidney failure and inregular heart beats. Haven't had a holiday in 6 years. I worry at the end of every month knowing that I will not be able to pay all my bills and my rent. I just need a little money to help me get back on my feet pay off some off the bills I owe.take my mum away on a short break and put a deposit on cheap property for me and my daughter and just be able to put back a smile back on my mum and daughters face. At the moment I'm just a wreck.