Answer

The sister of Āchārya Kalakāchārya is traditionally known as Sarasvatī.

Explanation

In Jain tradition, Sarasvatī was the sister of Kalakāchārya. The well-known story says that she was taken away by King Gardabhilla of Ujjain, and this became the reason Kalakāchārya sought help from the Śakas to punish the king.

Spiritual Understanding

The story of Kalakāchārya and Sarasvatī is remembered in Jain tradition as an example of the protection of dharma, dignity, and moral justice.

Takeaway

Āchārya Kalakāchārya’s sister was Sarasvatī.