She was pregnant, so she may have been ‘the other woman’..................
More likely because temple singers were respectable women in Egypt. And getting her into the area would have required some major pull.
Possibly the wife of the temple priest, the official scribe or the overseer.
Those are the only ones who would have had enough pull to get her there. We are talking about a place where everything would have had to be brought in so they kept the number of people there to a minimum.
Bringing in an extra person would have meant one less miner.