HUGS!!! My son was neutropenic (sp?) (not making white blood cells from birth thru 5mos) and CHP had him on 'leukemia watch' - they pricked or drew his blood 3x/week, then 2x, then once, then it got to once/month as he improved and now not at all at 28mos. They stopped being concerned when his numbers were increasing (which happened around 2-1/2mos) - even tho they hadn't reached the 'safe zone' numbers, they were getting higher, which showed that it wasn't leukemia. They ended up chalking it to him being 10wks early and not in-utero long enough to build up an immune system.
I kept getting as much breastmilk in him as possible (even accepting some from donors, since my milk ducts are messed up and it would take me 3days to pump 1oz). I added probiotics to my nipples when he nursed and to his bottles. We weren't allowed out of the house (except for bloodwork) for those 5mos, and my husband had to remove all of his work clothes before entering the house, then showering before handling our son. We spent alot of time on the back porch, getting evening sun rays. Visitors had to cover up, wash up and use one of his blankets to separate his body from their touch. (I'm just listing things that you may want to incorporate to help your daughter gradually improve her system, without being overwhelmed at this point.)
I would stop the internet research - and ask your doctor if her numbers are increasing - that's most likely why the docs aren't concerned.
Its a very scary place that you're in and we wish you the best!