[name_f]Ilene[/name_f] looks like [name_f]Irene[/name_f] but with an l. I personally don’t love how the capital I then lowercase l look beside each other - reminds me of llama, like two Ls, but I like that this spelling has special meaning for you, and I agree I prefer the “ene” ending to “een”.
Another spelling variation of [name_f]Eileen[/name_f] is [name_f]Aileen[/name_f].