Answer

I cannot determine the exact gotra of a specific Khambahti Jain Shah family from the information given.

Explanation

In Jain tradition, a family’s gotra is based on its lineage and ancestral record, not on the kul devi they worship. So following Ambika Devi does not by itself tell us the gotra.

Spiritual Understanding

Kul devi devotion is a matter of family faith and tradition. Gotra, on the other hand, comes from hereditary lineage. These are related to family identity, but one does not automatically decide the other.

Takeaway

If you want the exact gotra, it must be confirmed from the family’s own genealogy, elders, or written family records.