Desertion often implies a betrayal or deep disappointment and is emotionally charged. She couldn't forgive his desertion of the family during tough times.
Pro Tip 2/3
Intention Matters
Emphasize that desertion includes the intent not to return, not just leaving temporarily. When she left the house forever, it was seen as an act of desertion.
Pro Tip 3/3
Not Just Physical
Desertion can describe leaving responsibilities or ideals, not just people or places. Abandoning their principles felt like a desertion to their cause.