I'm sorry I didn't check back earlier! Poor little babe, sounds like she's really been through it, and you too!
Apparently it's quite common to be lactose and soya intolerant, my daughters paediatrician was surpried my GP has bothered to prescribe it, its used more for babies who's parents are vegan or have strong religous views regarding food.
I hope Elora is feeling better by now, all you can really do is keep an eye on her for signs of dehydration, dry mouth, lethargy, sunken fontanelle and also try the skin pinch test to see if the skin is slow to go back etc.
It will take about a week - 10 days to see if the new formula is working for her, so I hope you're seeing a change for the better by now. If by day 5-7 on the new formula you're not seeing any difference at all, you should probably try and bring your paeds appointment forward a bit.
It's such a shame that the docs are so slow to act, I'm still having problems with my little one being sick constantly. They've given her medicine which only seems to make her uncomfortable and miserable, so I do kind of understand what youre going through, she's been in hosp twice in a week as an emergency admission, and we're going back again 2mrw!
Have they done any tests at all? Has she lost any weight? they don't want to do any tests on my daughter untill she's actually lost weight, it's not good enough that she doesn't put any on!!! Did she need IV fluids when you took her to hospital?
I hope you're both ok, (and your your mum too!) good luck, let me know how you're getting on! k8.x