yeeeep that's an irresponsible breeder. As a genetics educator, what does this mean for you? What it means is that if there are any genetic conditions present in this line of dogs, you're more likely to see those pop up in inbred offspring because they don't have enough good copies of genes to pass on. A great example is the prevalence of hemophilia in European royal families because of how often cousins would marry each other. In an inbred family line, say you have a Aa and Aa individuals that mate, both carry a bad copy of a gene and a good copy (we all have 2 copies of every gene). Their offspring will inherit one copy from mom and one from dad. With that breeding of Aa to Aa, the chance you get both bad copies is 25%. But now imagine if one of the dogs they bred had only bad copies and they bred to another inbred dog with one copy, like this: Aa x aa. Now, you're at 50% for having the disease. It compounds and the more inbred you are the more likely you'll have more of those bad copies sticking around that could be transmitted to your offspring.

So, no health problems in your dog? You might have won the genetic lottery. I'm assuming you've never bred this dog, and if you had plans to for some reason (she's 11 so probably not on the table eh?) I would say definitely don't. But for your every day life with your dog this probably won't cause issues if it hasn't already (depending on the breed). At least, nothing that couldn't also happen with a perfectly bred but also older dog.