וָאֶבְכֶּ֣ה בַצּ֣וֹם נַפְשִׁ֑י וַתְּהִ֖י לַחֲרָפ֣וֹת לִֽי׃
Je pleure tout en m’imposant le jeûne, et ceci même a tourné à opprobre pour moi.
Radak
ולבכותה, and to weep for her. These two verbs are used on occasion without the prepositions אל and על as for instance in Psalms 69,11 ואבכה בצום נפשי, “when I wept and fasted;” the meaning of the prefix ב in front of צום is equivalent to the preposition על, “I fasted on account of the threat to my soul.” Compare also Genesis 36,35 ויבך אותו אביו, “his father wept for him.”