[capt_noonie]

First thing, has your vet checked her for a UTI or any other medical issue? Twelve years for some dogs is still very young, others quite old. If it's not a medical issue, it could be just she's getting old and can't hold it as long.

If your bed is low enough for her to jump down, I would try crate training again. I wouldn't expect a senior dog to hold it all night, so I would get a crate that is large enough for a bed and a pee pad. I have Toto who is 10 and if we are gone for a few hours and he needs to go, he will go on his pad inside his crate. The only space in there other than his bed is completely covered by the pee pad. That is the size crate you should use. Then I would put the crate in your room as yorkies love to be with their people.

I also would strongly agree with your idea to have her on a strict eating and drinking schedule. I suggest that to pretty much everyone. I have had several fosters in the past with varying degrees of success of potty training before they get to me, and I put them all on a schedule. Same time in each day=same time about, or thereabouts. The best schedule for you, only you know. But make a schedule and stick to it. We also have a new house. It was built less than 2 years ago and yes Toto had a few accidents when we first moved in. All the accidents were bc we didn't take him out! He is not the type that tells me when he needs to go. I need to take him outside and tell him to go and he will go. If yours is the same way, you need to take her out every few hours, or even every hour until she gets it.