Is this English phrase correct?

Hi, can any native English speaker halp me on this please? Is this phrase correct for a book title " Sara's mystique"?

Odd but grammatically correct. Much better than 'the mystique of Sara' for example.

so, 'the mystique of Sara' is better than " Sara's mystique" or the oher way around?

The other way round. Sara's Mystique is more normal and natural.

The other sounds exotic but loses meaning and context.

It depends maybe on what the book is about and its general tone.

Thank you

Perhaps things have changed, but when I was last in England around fifteen years back or so, I noticed signs in which the apostrophe was plainly omitted in instances where here in the States it would have been written, e.g. "Stationers shop" etc.