Thank you so much for taking the time to respond. Tomorrow we are seeing the Doc again (different Doc) for a last eval, and will post the details this weekend. For now, one blister has began to drain, and one busted. The third is still full size. I have kept the poor thing out of school this week, and she is down to a very low dose of percocet for the pain, so it looks like she is pulling through ok. Also, on Monday, the new Doc clarified after some tests that she won't have any permanent joint damage (two are on her knuckles) and that he felt she would heal up nicely.
As for the original tech, as you said, the important thing now is I focus on getting my daughter better. I did, however, go by and she was seen by an RN, who agreed it was incorrect, and that she would ensure the tech will not be performing this again without remedial training. So I am done with them, for now.
Once my daughter fully recovers, I'll address it with them again. BTW, this was a military hospital, if that tells you anything.
I'll give more details this weekend, but wanted to write something now as I really appreciated your educated response.
And yes, you were correct, it was fluid, not puss. You can tell I am not in the medical field!