Me again!
Annette I remember the feeling of not wanting DS to have to be on the Nutramigen, like it was something awful we were doing to him. DH used to get really mad some days and say how DS should be a "normal baby" who was drinking "normal milk like all other babies" (ie/ breastmilk....which only made me feel worse for not continuing to BF). He used to smell the Nutramigen and say that NO he was not going to give it to him, there had to be a better option, etc etc. But, the reality is that after about a month, DS sucked back his bottles, every drop of milk there was, screamed at bottle time and grabbed for it, and just really learned to enjoy his formula.
And, when we switched to cow's milk, he HATED it, just as much as he hated the Nutramigen, and we had to mix it in gradually to get him used to it. But my DH never once commented on how nasty or yucky the cow's milk was, because we don't think of it like that. To DS it was just as bad!!!
As for poops, if you do keep BFing then yes, they will probably be SO much better from now on! If you do get formula into her, do NOT be alarmed if his poop goes nasty again - the poop when they are on Nutramigen is often a very dark khaki green, quite runny and smells insanely horrid. A funky smell that doesn't smell like poop, but is just awful anyway. Just want to prepare you!
And yes, to add to Liz and Lan's stories about re-introduction - it might be worth asking your GP if you can have an appointment for a paed or a paediatric dietician for your DD. It was my paed who did the dietician referral and the dietician arranged the milk challenge when DS was one. We cancelled on it at the last minute as we moved overseas, but they basically give LO milk and watch for reations. I know a lot of parents do it on their own as their area doesn't do this, so maybe it is not available where you are (not sure which part of UK?). We did ours at home at 12 months and DS was quite ill, but then about a month later he got some butter by accident and was fine. So, I tried cheese, yogurt, and milk all that week and he was okay - I think at 14 months he went from HA formula to cow's milk. Paed had said to try at 12 months and if any reactions to hold off until 18 months, and then until 24 months if needed. Stats are high for babies to outgrow by 12 months, but there are small percentages who take longer to outgrow it.