House was completely renovated and the staircase and bannister where the blood was found was only built in 2019 and the house was not occupied until 2020. People don't normally go to each others houses and bleed all over the place. Considering what had happened in the house, it is more likely than not that it was a fresh bloodstain. Everyone who went in that house after the murders said blood was everywhere and it was a real mess. When I watched CSI process the house on TV, you could see they spent a lot of time in the living room and around the bannister on the second floor with swabs. They were also very interested in the bathroom on that floor. IMO, it would not be surprising for DM to have come into contact with blood in that area. She may or may not have felt it. Certainly, I've found something on my hand that I didn't know how it got there. That's not unusual. My main concern is LE had some evidence that it does not appear they completely investigated. If that was DM's DNA on the bannister, it would support her story.