I thought Shiva was male. Admittedly some faces in Hindu art can look "epicene", i.e. partway between male and female type. The matter is complicated by the presence of a woman called Shiva in a videogame that I recently heard of; I don't play commercial videogames. Likely the culprit was not an Indian and guessed Shiva's gender wrong by comparing with European type personal names that end in "-a".