My mum is my main stay. She watches the kids, does all the ferrying around if I'm at work, will pitch in with homework if need be and still finds time to throw a load or two of washing through.
My cousin is my shoulder to cry on. She's got kids the same age and will watch mine in a pinch.
I've got several good friends who will step in at moments notice. One recently came to DD11 assembly straight from night shift when the morning of we realized no one else was going to make it and she was getting an award.
My sister lives just around the corner but works a demanding office job but, maternity leave starts for her soon so I think we'll see more of her then.