If [name_f]Daisy[/name_f] and [name_f]Pearl[/name_f] can work I don’t see why [name_f]Gigi[/name_f] can’t. What about [name_f]Mairi[/name_f]? (it’s pronounced Mah-ry).
I think [name_f]Gigi[/name_f] works. I will second the suggestions of [name_f]Ita[/name_f], [name_u]Marty[/name_u], [name_u]Mars[/name_u], [name_f]Greta[/name_f], and [name_f]Maisie[/name_f]. I’ll also suggest [name_f]Meg[/name_f].
[name_f]Daisy[/name_f] is my favorite! [name_f]Gigi[/name_f] could work as a stretch! [name_f]Emmy[/name_f], too, with an “E” middle, or even something like Ara/Ari, [name_m]Garrett[/name_m] for something unisex, etc.? I’m a big fan of [name_f]Daisy[/name_f] in general though. Good luck!