She ended up giving baby a bit of formula which she guzzled down and then she did have a wet nappy, and I went over this morning and she'd done a poo too, so I think she's grand
The midwife is going over today so she will double check with her. My poor friend's nipples are taking a serious beating though bless her, baby has a seriously strong latch- she's the most alert, strong and wriggly 2 day old I have ever met!