We've tried many different heat level chiles and in different amounts. Usually don't get the rush with small bites or tastes, usually only with larger bites/samples or multiple samples in a row. So I could see that with one sample/bite. Don't know how much she ate ...just musing here...
jmho ...i feel like there has to be a certain level of capsaicin injested and it also depends on each body's reaction to capsaicin. At the NW chilefest a couple months ago, habaneroheat81 was tasting a lot of sauces and sampling pods left and right. I don't think he ever ate a whole pod of anything, just bites of t-scorps, fatalii, RS Habs, bhuts, douglahs, and then it hit. He got the major rush.