I think
Talitha could grow on me, though I don't see myself using it.
Annabel reminds me of one of my favourite poems (
Annabel Lee by
Edgar Allan Poe), so I think it's very beautiful, but unfortunately, too popular for my liking at the moment.
I pronounce
Talitha like
TAL-i-tha (sounds like
Tabitha, but with an "l").
Tali is a cute nickname!
If you're pronouncing
Talitha as
tah-LEE-ta, then, yes, I think it is too close to
Lolita. However, the way I say it, they do not seem too close, imo.
Unfortunately,
Annabel is far too popular for my liking. That being said, I do love it (because of the poem I mentioned before), and I would consider using it anyway! Personally, I automatically spell it
Annabel, unless the person spells it for me or I know it is spelled differently.
I pronounce
Annabel and
Annabelle the same way, with emphasis on the first syllable.