What's mildly irritating you today?

[DanaC]

Something may have unnerved her while pooing outside at some point.

My advice, for what it is worth:no telling off when she does it in the house - dogs aren't great at associating the lesson in the present with the action in the past. Unless you catch them in the act - in which case you then run the risk of them learning a very strong but unwelcome lesson that creates or increases anxiety around doing their business. You can inadvertently do the same thing if you pick a pup up when it starts doing its business and carry it to the mat, or outside - rather than letting them finish then picking them up and taking them to the mat or outside, or better yet anticipating when they are likely to want to do it and getting them onto the mat or outside ready for when the urge hits.

Keep taking her out and giving her the opportunity at the times she is most likely to want to do it (after a play , after waking, after a meal etc) and give her a treat if she does anything out there, whether its a piss or a poop.

And find a way if possible to block her from going to the indoor spot she has chosen.

Difficult to that stuff with consistency, particularly if you have family stuff and work to contend with as well.