I imagine the neurologist ran EEG, MRI, and other tests to determine the area(s) of her brain that were affected. If so, it would be good to get some detailed info from them on the results. The MRI will show bruising, bleeding, and other and the EEG can find anomalous processing (slow or fast wavelengths). If she has complete amnesia that continues, then specialists need to be found. Recovery for me was like a stair, with two steps up and one back as things were found then lost again, then found. At 1.5 weeks, rest and destressing are important. As your wife heals, consider doing things to escape such as books and movies, and to trigger memories. Talking about old days, meeting with friends, and travels all help to rewire.

My moderate TBI was from falls 31 years ago with minor damage to my right occipital, and moderate to my left temporal (finding words and numbers) and basal frontal (emotions, smell and taste) lobes. The brain heals, but it is a maddeningly slow process, and 1.5 weeks is very early in the recovery. It is very difficult emotionally as well, all of a sudden you are different; the feeling of being lost that continues as memories are found. What is still missing? It is handy to keep a diary of the recovery steps.