There are numerous variations of the famous saint name of St Elisabeth
von Thüringen. My mother was baptized Luise which was one of the
favorite names for girls in Prussia named after Queen Louise. In
general she used Liesbeth but she always wrote her name as Louise.
My wife was baptized Maria Elisabeth and that's what it says on her
driver's license but she has been Marlies since her earliest memory.
Liesbeth or Lisetta are just other versions of Elisabeth - always with
an S in German.
fred