L.R.
If you aren't sure that it's chickenpox, then call your doctor and see if you can get an appointment. When they first pop out, they're generally on the chest first and then for 3-4 days continue new outbreaks so it sounds like this is what you have but if you're unsure then you really need to consult a physican or your mom. I didn't know what it was when my kids had it but thankfully my mom knew and told me what it was.
Chickenpox can be dangerous. If you start getting blisters in your ears, mouth or extremely close to your eyes, call the doctor. I think the incubation period is 5-10 days but it's been 10 years since my older two boys had it and I can't remember. I'm fairly sure the 2nd one got it after the first one cleared up.
The best thing to do right now is oatmeal baths. If you don't want a mess then use aveeno but if you want this over with quicker then put oatmeal in the feet of several pairs of nylon hose. Tie them off and throw them in a tub full of warm water and soak for at least 15 minutes. Don't rinse off or towel dry off. You'll feel a bit slimy but let yourself air dry. Usually within a few hours, they'll start to dry out. Do this at least once a day until all the blisters scab over.
The oatmeal is perfectly safe and the more you use, the quicker it will dry out. If you don't have too many blisters, you can always make a past of oatmeal powder (put it in your food processor) and water and apply it directly to the blisters and leave it on.
Even if your daughter had been vacinated, she wouldn't be immune to them yet. It takes at least 6 months before the body builds up the immunity after the shot. My middle son caught the chickenpox about 4 months after the final shot and he had them really bad. Instead of the 7 day duration, his was 14 days and he was covered from the top of his head to the tops of his feet.
Some mother's deliberately expose their children to chicken pox before they're a year old so the kids get it and get over it because they can't scratch the blisters and cause a secondary infection. I wouldn't do it intentionally but I've heard it's better for them to get it young then when they're older.
Best of luck and I hope you and your daughter heal up quick.