Ethan didn't like the bottle either!!! it really made me worried but as it turns out, he now takes milk from a cup. also, you can sneak ebm into baby food. on a good day, Ethan has 2 ounces of ebm in his cereal and another 2 ounces from a cup, 2 ounces with lunch and two ounces with a midafternoon snack.
can you do flexi-time so that you can go in for one feed? we do that and it helps me to feel that Ethan is settled into nursery because i can check and see everyday!
but back to the cup, get one that is flexible so you can suit it to your lo's mouth, no spout or anything. if that doesn't work you could get a carer to feed her ebm from a spoon. its what the do with premies often.
good luck, its hard starting out but i think its been good for us too! we have been doing nursery for nearly 2 months now and it DOES get easier!
HTH!