She said may need to be rendered “she answered.” The verb Rebekah uses is again Drink as in verse 14. Her response offers more than the servant’s polite request. My lord expresses in this context an address form of a young girl to an older man, in which respect is shown. See also 18.3; 19.2; 23.6, 11, 15. In some languages honorific address forms are accompanied by honorific particles and verb forms.

And she quickly let down her jar upon her hand: that is, she lowered the water jar from her shoulder and held it so that the servant could drink from it. See Good News Translation. The manner in which the servant drinks should be acceptable in the local language and culture. For example, it may be necessary to say “and poured some water into his cupped hands.”

Quoted with permission from Reyburn, William D. and Fry, Euan McG. A Handbook on Genesis. (UBS Helps for Translators). New York: UBS, 1997. For this and other handbooks for translators see here .