She's plenty safe. Only if you throw up within 3-4 hours is it a worry.

does that happen often?? Should be fine but what i found is that if you take the pill about 20 min before going to bed, it works alot easier. just make sure you take it roughly the sdame time every night

Taking the pill at night actually makes some women sick to their stomachs. For other women, taking it in the morning makes them sick. Because of the time difference, I assume it is not her pill causing her nausea.