Yes, no nuts, including almond butter! You might want to look into Sunbutter. It's REALLY good! The no peanut butter before age 2 thing is b/c it's a choking hazard, really, so you shouldn't be giving nut butter either (although I did it, too, w/ my boys. lol. Liam has already had sunbutter on bread.
Wheat free bread.) If you have a Trader Joe's around, their store brand of sunflower butter is Sunbutter, which is made in a peanut and nut free facility.
As for reactions w/ a 10 month old, my ped told me hives and other "milder" reactions warrant Benadryl. Hives or whatever plus wheezing, fainting, face or neck swelling, vomitting, etc, warrant an epipen and a ride in an ambulance. Since your babe only had vomitting; no hives, no fainting, etc, she's been ok and wouldn't have warranted anything more than letting her puke it up. HTH.
Yeah, in our case, the reactions are severe enough for me to really remember. We don't have half of his allergens even allowed in the house. My 7 year old has become really anal about it. He tends to latch onto ideas and get obsessed. Sometimes I think we should have him tested for Asperger's, but that's another story.
It's not as hard to go w/out nuts as I thought it would be. I used to eat a lot of nuts b/c they are quick, easy, healthy, and packed w/ protein. Now, instead I have sunflower seeds, pumpkin seeds, squash seeds, etc, and seed butters.