I read that the name Elana (girl's) means tree in Hebrew, but could it not also mean God answered? I read that ana means answered in Hebrew and EL means God.
It's a variant of Ilana. I don't think that it could mean "God answered" because the vowels in the two different "el" sounds (ELana and EL) are different. Elana uses an "ee" sound in the Hebrew, whereas El uses a vowel that's more like "ehl."