Valanice

Wife of King Graham, mother of Rosella and Alexander.

She was captured by an evil wizard (or so we think) and trapped inside a crystal tower where Graham found and rescued her. Rosella drove her crazy in KQ VII by jumping in a lake and disappearing. Being a wonderful mother, Valanice followed and then had to find her in the lands of Ooga Booga, Falderal, and Etheria.