I agree, many names would work great with [name_f]Sasha[/name_f], plus if your not using the middle name [name_f][/name_f] in everyday casual reference then its also totally okay is it doesn’t sound perfect.
[name_f][/name_f]How about:
[name_f][/name_f][name_f]Amelie[/name_f]
[name_f][/name_f][name_f]Lilia[/name_f]
[name_f][/name_f][name_f]Elaine[/name_f]
[name_f][/name_f][name_f]Julia[/name_f]
[name_f][/name_f][name_f]Aubrey[/name_f] / [name_f]Audrey[/name_f]
[name_f][/name_f][name_f]Yvette[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f]
[name_f][/name_f][name_f]Enid[/name_f]
[name_f][/name_f][name_f]Erin[/name_f]
[name_f][/name_f][name_f]Freya[/name_f]
[name_f][/name_f][name_f]Noelle[/name_f]
[name_f][/name_f][name_f]Camille[/name_f]
[name_f][/name_f][name_f]Maren[/name_f]
[name_f][/name_f][name_f]Gwen[/name_f]
[name_f][/name_f][name_f]Maeve[/name_f]
[name_f][/name_f][name_f]Belle[/name_f]
[name_f][/name_f][name_f]Eve[/name_f]
[name_f][/name_f][name_f]Olive[/name_f]
[name_f][/name_f][name_f]Lenore[/name_f]
[name_f][/name_f][name_f]Jade[/name_f]
[name_f][/name_f][name_f]Ruby[/name_f]
[name_f][/name_f][name_f]Alice[/name_f]
[name_f][/name_f][name_f]Harper[/name_f]
[name_f][/name_f][name_f]Eloise[/name_f]
[name_f][/name_f][name_f]Madeline[/name_f]
[name_f][/name_f][name_f]Colette[/name_f]
[name_f][/name_f][name_f]Genevieve[/name_f]
[name_f][/name_f][name_f]Naomi[/name_f]
[name_f][/name_f][name_f]Natalie[/name_f]
[name_f]Hope[/name_f] this helps!