It's often hard to believe how fast time goes. I can't believe my boy is going to be 9yrs!
When dogs, cats, humans, etc get old they often loose full cogntion and bladder control. It's pointless to show an old individual their accident and can actually be harmfull. You dog coud get so nervous about punishment (scolding), that she looses more of her control. You wouldn't scold your grandmother for loosing control, would you? Instead you should take her to a vet for a work up:urinalysis, blood chemistry and cbc. Is this due to a bladder infection, diabetes, kidney failure, liver failure, weak muscles? Can something be done to help prevent it from happening again?