had been trying to work out how to get Gwen's mother sarah to appear in pre-searing.
When you're finished in pre-searing and about to accept to go on, decline the last one and take the msg where you have something to do first before you go on.
then go to the town outside the Abbey where Devona is. Next to the res shrine there is a house if your done it right Sarah will be there
I took Gwen there and talked to her mother she didnt say much just that she had to go off and get some herbs, i waited for awhile to see if anything happened between Gwen and her mother nothing happened.
Whether this has anything to do with a later on quest or affects how the story goes I dont know.
If anyone has any idea or knows more will like to hear about it
Should have watched the scene when going on to see if anything happened to Gwen differently this time but was with someone who wanted to move on
I also can back up what the OP says, I've seen it too. Doesn't seem to have any particular significance, as Dyeeo pointed out. I doubt we'll learn more about the Great Gwen Mystery until the next expansion...