It is most probable that she staid with her until she was brought to bed, not leaving her just at the time of her travail, but she staid not long after, but went home: by this time she must herself know that she was with child; and here in the true order of the history cometh in what we had Mat_1:18-25: See Poole on "Mat_1:18" and following verses to Mat_1:25.