It's possible it's a variation of a name like:
* Luisa: A Spanish and Italian name meaning "famous warrior."
* Lucita: A Spanish diminutive form of "Lucía," meaning "light" or "illumination."
* Lusita: This could be a variation of "Lusitania," a name of historical significance.
Without more context, it's difficult to determine the intended meaning of "Lushita."