Ecifircas said:

A bit late to the party but hobbyist dog trainer of some years here!
It's good you're scheduling a vet since an online forum game really isn't going to give you the best answers but...

A dog exhibiting an usual behavior, like peeing inside very suddenly, could be a health issue or an anxiety thing. Taking her to the vet would help rule out health issues so that's the first step.

A dog urinating inside is a management issue. It's the owner's fault for giving your dog the chance to. I'd hold back water / food about an hour before you go to bed and then crate your dog for short amounts of time and let her out through the night (since she's a small breed).

just be careful and patient with your dog. It's not her fault. :')

Musa said:

When Penelope got groomed she soon started to pee and poop on the carpet in the playroom even though she is house trained to pee and poop on the potty pads and she still does every morning when me and her wake up. But all of a sudden she starts this and we even rub her face in her pee when she pees on the carpet and I even spank her. But I know that isn't the right thing to do. But it seems like she still doesn't get the message. Do you guys have any suggestions for me? To make her stop completely? Also she is a full grown Shih Tzu and I put her in her kennel for a timeout when she gets into trouble and we do have a stainless removal called Pooph and it works.