Complex sentence: She ran out of the town with Krishna still clinging to her and finally fell dead, assuming her real demonic form, felling trees to the distance of three "gavyuti" (a unit of distance equivalent totally to 12 miles) to dust.
Split into simpler sentences: She ran out of the town with Krishna still clinging to her and finally fell dead. She then assumed her real demonic form, turning trees to the distance of three "gavyuti" (a unit of distance equivalent totally to 12 miles) to dust.