johng
Jen-
There are many options with kefir, including coconut water, fruit juices.... check out this web site:
http://users.chariot.net.au/~dna/kefirpage.html#alternativekefir
look for the section on non-dairy grains. Also, in the kefir forum you might email Marilyn the Kefir Lady, she is very knowledgeable re kefir.
our son's ige was just as bad as your daughters when he was at about 5 months old. we have not measured it since, so I can't say where he is now, but overall he is so much better. it takes time, and is very very gradual, and there are flare-ups, so don't lose hope.
Have you checked into things like JMT or BRT for allergy treatment (google them)? If all else fails for us, by next year we may try one of these.
Hang in there, i know you are going through rough times.
John g