Playing a little devil's advocate here.
I would certainly think that if there was blood in the garage LE has discovered it, collected it, and tested it. So, this is probably not new information for them.
They have not confirmed anything about the neighbor's video except that they have seen it and it's a part of the investigation.
They have not commented at all about a suspect or person of interest. Not TS, the supposed friend, stranger, etc.
LE has been very tight lipped about this investigation except to say that no foul play is suspected, it is not a criminal investigation, any information that is prematurely released and is not directly from the El Paso County Sheriff’s Office is not a credible source, and warning against misinformation being shared on social media.
She says "cleared" for 3 key things: the hike, the shopping trip, and him returning from the shopping trip with her.
I would guess that LE would be able to confirm these things pretty quickly
Her statement "Last they have more in-depth details that go along with this pointing to who sent the person or why he may have come" suggests to me that there is a lot more evidence that we know nothing of. There IS a person of interest according to TS, we just don't know who that is.
All JMO