Bach flower non-help syndrome

Hello Everyone, as a practitioner of natural remedies, I try to help the whole family through the use of Bach flowers. I have a grandson who has been suffering from panic attacks for many years. Talking about it and working on it together, I came to the conclusion that the cause of it all lies in a traumatic experience he went through when he was very young. The bad experience resulted, many years later, in the terror of finding himself in a moment of need, with no one to help him. Searching among the Bach flowers, however, I have not found anything that corresponds to this state of mind. His ‘key word’, if we can say so, is ‘I’m no longer alone!’, When he has his cell phone with him that gives him security. Can any of you professionals help me? Thank you