What is "harsidhhi"

Harsidhhi, a contracted form or, at its very least, a form of "Harshad Amba" - The Happy Mother, is considered one of the aspect of Amba and Kalika, the Hindu Devi. She is also known by the names like Harshal, Harshad, Harshat, Shikotar, Sikotar, Dasha, Momai and Vahanvati Mata. She is also known as Sindhoi Mata or Goddess of Sands, in Sindh in Pakistan, where her temple is located.