Rishta Likhenge Hum Naya S01 E95 Ratan's Plan

Arpita advises Ratan not to fabricate the evidence. Ratan meets Kaki Maa Sa and asks her if she exchanged the broken glass, which was a crucial evidence. Kaki Maa Sa informs that she did fabricate the evidence. How will Ratan prove Diya's innocence?