[a].
*Here "[as]" is supplied as a component of the temporal genitive absolute participle ("were gathering")
[b].
Or possibly "of people," in a generic sense, although the reference here may be to the specific group responsible for Jesus' arrest, where it is unlikely women were present
Scripture quotations marked (LEB) are from the Lexham English Bible. Copyright 2012 Logos Bible Software. Lexham is a registered trademark of Logos Bible Software.