I like the nn [name_f]Molly[/name_f] but I prefer longer formal names instead of a nickname as a full name. What full names work for nn [name_f]Molly[/name_f]?
It’s usually a nickname for [name_f]Mary[/name_f], but I guess any “M” name could work.
[name_u]Marion[/name_u], [name_f]Margaret[/name_f], [name_f]Margo[/name_f]
or
[name_f]Amalia[/name_f]
[name_f]Amelie[/name_f]
Historically, [name_f]Molly[/name_f] was a nickname for [name_f]Mary[/name_f], so I’d think any [name_f]Mary[/name_f] variation could work. I’ve also heard it as a nickname for [name_f]Margaret[/name_f].
My sister has a daughter named Mollison and she goes by [name_f]Molly[/name_f]. Mollison is nms, but I thought I would suggest it since I don’t know you naming style.
I really just love [name_f]Molly[/name_f] on its own!
I know a [name_f]Pollyanna[/name_f], so I guess you could have a Mollyanna. 
Have you been warned that [name_f]Molly[/name_f] is an extremely popular name for dogs? Of course people do give dogs their favorite names which makes it difficult when they later want to name their child.
I second [name_f]Amalia[/name_f]. I also like [name_f]Magali[/name_f], [name_f]Marguerite[/name_f], Mélusine, or [name_f]Amelina[/name_f] as full names : )
I love the name [name_f]Molly[/name_f]. I agree with those who have said that pretty much any M name would work: [name_f]Miriam[/name_f], [name_u]Marion[/name_u], [name_f]Margaret[/name_f], [name_f]Margot[/name_f]. I like it best as a stand alone or with [name_f]Margaret[/name_f].
What about [name_f]Moira[/name_f]?
It is an Irish version of [name_f]Mary[/name_f] and shares [name_f]Molly[/name_f]'s “o”.
[name_f]Every[/name_f] [name_f]Molly[/name_f] that I know is just [name_f]Molly[/name_f]. You could have [name_f]Molly[/name_f] be a nickname for something if you really want to but most Mollies are just [name_f]Molly[/name_f]. No long form necessary. Maybe use a longer middle name if you want to offset the relatively short length of [name_f]Molly[/name_f]. You could maybe call her by both her first and middle names if you so choose. She could be [name_f]Molly[/name_f] [name_f]Katherine[/name_f], or [name_f]Molly[/name_f] [name_f]Kate[/name_f]. Others might just call her [name_f]Molly[/name_f], but you get your length.
I think [name_f]Molly[/name_f] works on its own…but Molina, [name_f]Mary[/name_f], [name_f]Margo[/name_f].
I love the name [name_u]Malin[/name_u] =)
I also think that [name_f]Molly[/name_f] would work as a nickname for almost any M-name, especially the [name_f]Mary[/name_f] variants and derivatives. [name_f]Molly[/name_f] is also lovely on its own.
But here are some ideas, preferencing names with 'l’s and 'o’s:
I second [name_f]Amalia[/name_f], [name_f]Amelina[/name_f], Mélusine and Molina.
And I add [name_f]Romola[/name_f], [name_f]Malina[/name_f], [name_f]Marigold[/name_f], [name_f]Marisol[/name_f], [name_f]Magnolia[/name_f], [name_u]Columba[/name_u], Menolly, Marvola, [name_f]Mallory[/name_f], [name_u]Marlowe[/name_u], [name_f]Melody[/name_f], [name_f]Marjolaine[/name_f], Manola, [name_f]Magdolna[/name_f], [name_f]Colombina[/name_f], [name_f]Melora[/name_f], Merrol, [name_f]Marolyn[/name_f], [name_f]Olympia[/name_f], [name_f]Meriol[/name_f], Micol, [name_f]Muriel[/name_f], Omolara, Molinda, Minola, Moseley, McConnell, Mollinson, Molyneux, Moreland and Molligan.
Loving some of the suggestions, especially [name_f]Magali[/name_f], [name_f]Margot[/name_f] and [name_f]Miriam[/name_f].
[name_m]How[/name_m] about [name_f]Emilia[/name_f], [name_f]Emmeline[/name_f], [name_f]Milla[/name_f]/[name_f]Mila[/name_f], [name_f]Amelie[/name_f], [name_f]Moa[/name_f] or Melua?
I love [name_f]Molly[/name_f] as a nickname for [name_f]Melanie[/name_f]!
[name_f]Margaret[/name_f] or [name_f]Marguerite[/name_f]
Back a 100 to 200 years ago [name_f]Molly[/name_f] was used as the nickname for [name_f]Mary[/name_f] . Often [name_f]Mary[/name_f] [name_f]Ann[/name_f]. I’ve seen it in a lot of Genealogies. The name is listed as [name_f]Mary[/name_f] [name_f]Ann[/name_f] ([name_f]Molly[/name_f]) [name_m]Smith[/name_m]. So that’s an idea. Also you could combine [name_f]MaryAnn[/name_f]. [name_f]Marianne[/name_f]. [name_f]Maryanna[/name_f]…
The most obvious name is [name_f]Mary[/name_f]; [name_f]Molly[/name_f] was originated as a nn for [name_f]Mary[/name_f]. I happen to love [name_f]Mary[/name_f], nn [name_f]Molly[/name_f] (it’s my favorite name and my great grandmas name), but if you want something else, here’s some other choices-
Basically any variation of [name_f]Mary[/name_f]
[name_f]Margaret[/name_f]
Mollianne/Mollianna (not my style at all but it might work for you)
[name_f]Melissa[/name_f]
[name_f]Matilda[/name_f] (bit of a stretch)
My aunt is [name_f]Mary[/name_f] [name_f]Rose[/name_f] nn [name_f]Molly[/name_f]. Maybe [name_f]Rosemary[/name_f] would work? I like the suggestion of [name_f]Margaret[/name_f] or [name_f]Moira[/name_f].
I also like the suggestions of [name_f]Amalia[/name_f] and would like to add [name_f]Malina[/name_f], [name_f]Milena[/name_f], Molina, etc.