I think
Abigail is beautiful, but
Abbey has become quite boring... besides, it's kind of a waste of a beautiful name to shorten
Abigail to
Abbey. (the e thrown into the nn is unnecessary clutter too imo).
Not a fan of
Gwendolyn.
Abigail Michelle is kinda nice, though may be a bit heavy on the L endings for some people...
My
Abigail combo is
Abigail Setsuyo (on my long list), but if you're not wanting Jpns., maybe 1 of these could work...
Christine /
KristineKristinJoleneJanessaVanessaCarmenTrudene
KendraJasmineDomingaDominiqueTehilah
RoxanneBronwen /
BronwynJoanne