When Leah saw that
"When Leah became aware that"
she took Zilpah, her servant, and gave her to Jacob as a wife
"she gave Zilpah, her servant, to Jacob as a wife"
This is the name of Leah's female servant. See how you translated this in Genesis 29:24.
bore Jacob a son
"gave birth to a son for Jacob"
This is fortunate!
"How fortunate!" or "What good luck!"
called his name Gad
Translators may also add a footnote that says "The name Gad means 'fortunate.'"