I love both names and personally don’t think you can go wrong either way. It sounds as though you are leaning more towards [name_f]Theodora[/name_f], so I would say go for that. Especially if you Prefer the nickname options. [name_m]The[/name_m] only other nickname for [name_f]Felicity[/name_f] I haven’t seen mentioned yet is Fizz. Although this is very similar to [name_f]Izzy[/name_f].
For you I would go for [name_f]Theodora[/name_f] with your girls names, especially as you’ve circled back to her 