The single most important question is this. how long do you plan to drag out this awful coma for? Are you going to wake her up in chapter II ? Surely you gotta wake her up this chapter!
Regarding sarah, it would surprise me if people never bothered with her and her story. it is really compelling and lets slip a few very important things, specifically about the guy who put his wife in the coma. Now we just need the mc to terminally deal him once and for all.
It's great to hear your health is improving. Sadly once you end up on blood pressure tablets you tend to remain on them for the rest of your life, once you end up with high blood pressure it generally stays with you, and you can manage it to keep it as normal as possible. Remember though, you need to keep the walking up or you could visit the gym and use the static bikes, which is actually a lot better for you because it will give a complete cardio work out and will definitely help sort out your high blood pressure, but first ask your doctor or specialist can you go to the gym, after they have checked your heart, not everyone can.
I really hope you get better and healthy soon!! Take care friend!