I have always wondered why kripa married Prithvi, and some varied thoughts came to my mind, and here's what they are:
Kripa could be hiding behind Prithvi, afraid that Angad will lift her off her feet once again, but this time not in paradise, in hell, together they will burn. She might, be afraid of his wrath, his anger that will break hell to fathom her...
Or, her marriage to Prithvi could be a compromise, of gratification of all that's done for her. she might have felt too weak to compose herself, and therefore took the support Prithvi offered to her. Maybe that support, gave her comfort, into believing that she could forget every rain drop memory of Angad's, and leave the thorns and fire, and daisies and rainbows behind, and begin a new beginning of love with Prithvi, but kya haal - this marriage is strikey and holds no love nor beauty in it.
Or, Kripa might have come into her irrational thinking, and thought she could turn her friendship with Prithvi into love. If, she thought that, she's playing denial her. She knows in her entire deity that Angad's every breath composes her soul, his every glimpse livens her heart, and his every stare, sends sparks down her spine. She knows, that her life is meaningless without Angad.
Remember the scene when Prithvi held a gun at Angad, and Kripa came limping/running, in front of Angad. And never did she have remorse that she sould lose her life. So, her life is meaningless without Angad. She knew that Prithvi couldn't affect her, then why???
"kahaan se yeh hava ayee...gataaye kaali kyu chaayi..kaffa hogaye hum...juda hogaye hum...woh lamhe...woh baathein...koi nahi jaane..yeh kaisi raathein....barsaathe
Love
Soni