part of what may help is to put some effort in to teaching her about "daytime" - for example waking her for a feed every 3 hours during the day, taking her outside and letting her see the light and the daytime and hear the noises. Usually bubs that wake heaps at night have their "nighttime" (a big 4+ hour sleep) during the day - so turning that around can help. Don't stress the Mum's group - it happens - and over the course of the sessions it will happen to most of the Mums and Bubs there.