El Tayeb raced to a straight game victory in the final of the tournament, a major PSA World tour event.
The former Egyptian national champion, currently ranked 14, two rungs below Joshna, defeated the third seeded Indian 11-4, 11-4, 11-4 to lift only her fourth PSA title, the last coming more than a year ago.
The Indian had yesterday shocked top seed Annie Au of Hong Kong to storm into the final.