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That's a clue!!! I hope she know it was a clue (/TДT)/. She been thinking of her friend, that's why the crystal ball show her.
(I think this crystal ball show you the one you been thinking the most! And she been thinking of her friend, if she was alright, fine after they fall in the cracked road, (to be honest no one can survive that fall XD.) and if she was crying about her (She thinks that she the only one who got transmigrated and thinks that "Her" friend survived the fall and she died) she pretty dumb XD, Not her friend! Her friend is not dumb.)