Her witch craft is the main thing for the motive
practical
Even though Grendel seems as though he's being harsh by eating the exile, he is actually being practical. He says he tries to do things that are more considerate like befriending or ignoring him. However, since the exiles were treacherous, eating them is the most practical solution.
Answer:
Rival families regularly fight each other.
Explanation:
HOPE THIS HELPS YOU!!!!! :D
The danger and chaos associated within the place