This introduces Martha as a new character. Your language may have a way of introducing new people. (See: [[rc://en/ta/man/translate/writing-participants]])
This was the normal and respectful position for a learner at that time. AT: "sat on the floor near Jesus" (See: [[rc://en/ta/man/translate/figs-explicit]])
This refers to everything that Jesus taught while at Martha's house. AT: "listened to the Lord teach" (See: [[rc://en/ta/man/translate/figs-metonymy]])