At the time of her Christening, as Sharon noted, her names were written : Johanna Aletta Charlotta. Her maternal grandmother, however, was called Johanna Charlotta (only) though.
When WARRAKER married her, she signed J.S. DOUBELL (seemingly being unaware of Aletta, and spelling Charlotta with an "S").
On her Probate the Aletta was also left off.