More interesting than
Margaret, and the "leet" is more attractive than "ret" on a girl. I don't really get the "glittery/sparkly" vibe. It simply feels like a spring day to me - fresh, green with yellow sunshine. Perhaps then it's more shiny to me than sparkly, lol, but in a more nature-y way than a jewel way.
From your combos I like:
Maraglit
CeciliaMargalit CecilyMargalit EudoraMargalit EugenieMargalit FrancesMargalit IrisMargalit JoannaMaraglit
SimonaMaraglit
SophroniaMargalit Susanna
I think the name lends itself well to having a 's' or soft 'c' middle name. I would avoid doubling up on the hard 'g' sound (e.g.
Margalit Agatha is awkward and unattractive to me).