WAHM stands for Working At Home Mum. You can check out the Nappy Network for contact details and ideas.
Otherwise you could try and get your hands on some XL Fuzzi Bunz. My daughter wore them as a night nappy from 2.5-3.5yrs and they were fantastic. Really generous in size, and she's wasn't a petite little girl (15kg at 2yrs)!! She's now 4.5yrs and 20kg and they still fit her (I tried out of curiosity a few weeks ago). Check out TM as they sometimes come up on there. I only have bubblegum pink & lavender so they would be no good to you