逆恨み
1. こちらが恨みに思っていいはずの人から逆に恨まれること。
2. 人の好意を曲解して、逆に恨むこと。また、筋違いなことを理由に人を恨むこと。
being resented (by someone one holds resentment towards)
responding to kindness with resentment; thinking ill of someone who meant to be kind; resentment caused by a misunderstanding
unjustified resentment; unreasonable grudge