(Correction: The triangle chart shows that it should have an ‘e’, and the swatch chart from the previous survey shows that it shouldn’t.)
The “pie” (swatch) chart was a representation of the responses from the previous ‘Ships Ahoy!’ survey. If you would look closely, it’s the same chart.
During those times, ‘Adrinette’ was only very slightly preferred over ‘Adrienette’, making no clear conclusion on which version is “correct”.
This time, however, ‘Adrienette’ is preferred by more people. While there is no actual solid rule on whether it should be spelled that way or not, the more recent data suggests that more people accept ‘Adrienette’ than ‘Adrinette’, which still has many supporters, and is about equally accepted.
As a rule, more recent data is more accurate than old data, so the conclusion that “Yes, ‘Adrienette’ has an E” is drawn from the fact that more people spelled it with an E. ‘Adrinette’, with its large number of supporters, is still acceptable.
You can spell it however you want, but more people spelled it “Adrienette” when the survey was conducted in February.