CLARA-LAEILA LAUDETTE FEWER Spanish women were killed by their partner or ex-partner in 2020 than in previous years, but that statistic masks a rise in gender-based violence as COVID lockdowns left victims confined with their abusers, rights groups and officials say. Emails to abuse helplines soared nearly six-fold in April, the first full month of Spain's lockdown. "Control-based violence - which doesn't murder, but is insidious and devastating - grew, because violent partners already had women under their physical control," Victoria Rosell, the ministry's top official on gender abuse issues, told reporters on Wednesday. In 2020 overall, calls to the…