What did Cleopatras mother do?

We don't know. In fact we don't even know who Cleopatra's mother was. We know that her father was married to Cleopatra V, but we don't know if she were Cleopatra VII's mother. Egyptian rulers had lesser wives or concubines, and Cleo VII could have been the daughter of one of them. The only way we'll know is if they find her mummy and run tests to determine her lineage.