Succubus (2006)

Lilith, a cat-rescuing entrepreneur, and Athena, a genetic engineer, are desperately trying to have a baby together. Their attempts to conceive with the help of science have failed, so Lilith takes matters into her own hands, and uses her unique skill set to steal some very special sperm. That task turns out to be an easy one compared to convincing Athena it's a good idea!