And keep her by you. Throw a fit about it if you have to! She's *your* baby, not hers. She's had her go. If she wants to help, she can change her nappies, listen out for her and/or cuddle her while you have a bath. But if she's crying and hungry, she needs to go on the breast. If she's crying and needs comfort, the breast is great for that, too. She's spent all this time inside *you* and needs her mummy (and she knows the difference, even in a cuddle - you smell, sound and look like what she wants) when she cries these first few months. If the MIL is there to help you, she should do what you ask, not as she wishes. (Sorry, overbearing people interfering with the mummy/baby drive me mad. Can you tell?)
Are you on FB, Linzi (edit: reading this back, I think I meant Jodie...)? Lactivist, The Leaky B@@b and Dispelling Breastfeeding Myths are some of my favourite places for advice and support. x