not be/feel/seem herselfinformal if a woman or girl is not herself, she does not feel or behave as she usually does, for example because she is upset or ill （她）〔因情绪或身体欠佳等〕感觉不妥；行为反常 You must forgive her – she’s not herself at present. 你一定要原谅她——她目前情绪反常。
→ not be/feel/seem herself at herself(2)