ANSWER:
This is not permissible and one of the traps of Shaytan to make her go back in entering a haram relationship!
Part of her repentance is to cut off all communication with him while showing deep remorse and sincerity. No boy ever talks innocently with a girl except that he intends to win the jackpot! This is all what men thinks of! Any cheap woman who talks to a boy can easily be taken advantage of. I have hundreds of cases where the boy recorded previous chats and calls and kept photos shared by the girl with him and after that he blackmails her with this and threatens to expose her to her parents, family and relatives!