I'm going to go with Helene. Incidentally, that was the name of the street my parents lived on when I was born

My cousin has a Heléna and she's all uptight and prissy about pronouncing it Hel-ayyyy-nah (yes, stretched out like you're yawning), and you HAVE TO have the accent (I'm not sure if I've put it in right) or she gets even angrier. So that's turned me off that name