Answer:
The reason her grandfather might understand her father better than hers could be because it's his son. Her grandfather raised her father. Which could effect their communication.
May result from damage to the right Frontal Lobe
Answer:
For example: I am a fan of BTS. BTS makes songs on teenage mental health and how they can overcome it. When fans listen to their songs, they can relate because the lyrics are really meaningful; They feel 'safe' as they see their favourite artists as their source of hope.