I like it spelled
Alesia, but in that case I'd feel more inclined to pronounce it more ah-LAY-zee-uh, like Alésia, an ancient city in Gaul. Do you think Ah-LEE-see-ah would work for
Alesia? I really love the sound, but, as you said, I imagine the poor girl would only get called Ah-LEE-shuh the whole time if I spelled it
Alecia or
Alicia. .