Or HaChaim on Genesis 27:46/אור החיים על בראשית כ״ז:מ״ו

1 קצתי בחיי. "I am fed up with my life." She did not want to reveal the true reason for her state of mind because it is forbidden to tell tales. This is why she gave Isaac a different reason for wanting Jacob sent away. When she had revealed Esau's intention to Jacob this was not tale-bearing but was fulfilment of the commandment in the second half of the verse dealing with tale bearing, "do not stand idly by when the blood of your fellow man is being shed" (Leviticus 19,16).