stop nursing

I'm thinking of no longer nursing my 13 month old, she has been exclusively breastfed since she was born and I really want to help my husband by getting a job since he is the only one working at this point. However my daughter is so attached to me and I feel horrible leaving her with anyone but how do I stop nursing? She won't take a sippy cup or a bottle either I have tried numerous times any advice will be great please help