I'm curious about 2. She returned home a few minutes before she called 911. What alerted her to a serious problem that required a 911 call? Had she called several times earlier and got no answer? If I came home and my husband were not here, I would not immediately suspect a problem. Especially if I saw his truck I would think he is around somewhere, at a neighbor's, back part of the property, shop, or something. How long was she home and what led her to call 911?
She had been home for 45 minutes, searched house and land then shop (because it had been locked, so she assumed he wasn't there at first). Saw blood in the shop and called ASAP.