To honor your grandmother you can also choose a name with the same meaning,
Ester means 'star' so you could use these as mn or fn to honor her:
Danika /
DanicaSitaraYildizStellaSterreSerenDaraAstraAstraea (I love this, but it would be hard to spell)
Estrella (mn of my little cousin :)
An other way to honor her would be using another gemstone:
AlmasEsmeraldaNeelamSafira (I think this would go well with
Azalea)
Maybe you could name one with an gemstone and one with a star :)
From your list I like
Azalea,
Vivian,
SageI dislike
Bianca, the others are ok.
other suggestions:
Rosalia /
RosalinaAmayaOleander ('rose tree' Greek)
VerenaVanora ('white wave' Celtic)
CelinaLeanoraKaleaEveline