DD is 14, almost 15. She's friends with a boy, let's call him Tom.
She got a message about a month ago, on Instagram from a ‘girl’ and the message said ‘hello, I'm friends with tom’, DD asked Tom if he's friends with a girl called x and he said yes. She then spoke to the girl and everything was fine. But last night, she was messaging them ‘both’ and then the ‘girl’ called her and she saw Tom and then the call ended. The ‘girl’ then said it was an accident. DD asked tom what he was doing and he said nothing she then asked him why he was on the girls account, he said he wasn't and then told her they were together. dd didn't really believe him.
They carried on messaging and then Tom sent a message which was meant to be from the ‘girls’ account so DD confronted him and he then admitted that he made the account, DD asked him why and he told her he didn't know, DD told him it was weird and he told her to it was a joke and she doesn't have to take it so seriously.
DD has told me as she feels uncomfortable, what should I advise her to do?