No you're right. Prior to that she had an interesting origin, as an amoral psychiatrist who managed to build up the original, male Moonstone's feelings of inadequacy to the extent that he subconsciously rejected the moonstone from his body and she was there to grab it and absorb it into herself, but beyond that she never did much that memorable, even as a member of the most effective team of Masters of Evil.
Thunderbolts on the other had her written as a core character by Kurt Busiek firing on all cylinders.