Hm that sounds like a Muslim name - not an issue per se, would just be a mismatch if trying to honor my family. I do like the name though 
That sound most definitely exists in English, it simply doesnât have its own letter. Itâs pronounced like -ch in arch.
But please donât spell it Sunchica. That would ruin the whole thing haha.
Congratulations!
As a fellow Croatian, here are some baby girl and boy names that I adore:
[name_f]Milena[/name_f] (nickname [name_f]Mila[/name_f])
Iskra (so pretty)
[name_f]Petra[/name_f] (my favourite on my list)
[name_f]Anja[/name_f]
[name_f]Danica[/name_f]
[name_f]Maja[/name_f]
[name_f]Katja[/name_f]
Milosz
[name_u]Milan[/name_u]
[name_m]Luka[/name_m]
Dejan
These names are much easier to pronounce than my name [name_f]Tatjana[/name_f].