I can't give medical advice, but want to state at the top of this post that if it were my husband or Mom, I'd be making sure they were taking Vitamin K2 and also CoEnzyme Q10 or Qunol, which are known to improve clotting. I can't say what would work best for you or your loved one, this is just what I would give to my own family, and what I'd take myself (provided I was monitoring the situation and it didn't seem to be making things worse). I can honestly tell you that I've never seen a single person have any negative side effects from either of these supplements. Not saying it could never happen, I've just never seen or heard of it.
From Google (regarding Vitamin K and Coenzyme Q-10):
You can see the link HERE.
Please note that there are a lot of things that can thin the blood, including healthy supplements, like circumin / turmeric, ginger, oregano oil, astragalus and more, so you have to be careful how much you consume of any supplement. When you have cirrhosis, you have to monitor everything that goes into your body like a watchdog!
I recommend reading this article about PT and INR, so you can better understand your blood test results.
Understanding the PT-INR Test
Here's another link: