What did Rachel mean when she stated that Hashem had judged her...?
Rashi: She meant that Hashem had initially judged her and found her guilty (which is why He withheld children from her), 1 and had now judged her favorably and given her a son (via her maidservant).
Seforno: She acknowledged Hashem's righteousness in withholding from her children, and thanked Him for giving her a son 'a staff (support for her old age) and a shovel to bury her'. 2
Targum Yonasan: He had now judged her mercifully, accepted her Tefilos and given her a son.
Why did Rachel and Leah refer to the children of Bilhah and Zilpah as sons, and not Avadim?