Better that you saw her 0.3-0.4 than if she was down low. With a built up tolerance such that she could walk and talk with her level that high, she would have quite the DTs and withdrawal if she hadn't had her ETOH that day.
I actually saw an old patient yesterday that I took care of about 5 yrs ago for gastritis/DTs. Call was for abd pain and he was shaking like a leaf. Couldn't figure out what the deal was with the shaking until I asked his family if he drank ETOH... no one had volunteered any info about his VERY heavy daily alcohol consumption because he wasn't drunk that night. He hadn't been able to keep any food or liquid down due to vomiting!!! Bingo! You vomit. Your brain doesn't get the ETOH. You get the DTs. Good news is the guy is sober and doing really well now.