There are a lot of suspicious spouses out there. She may have been with him but is nervous because somehow LE think he is involved. I know with absolute certainty that my husband would not be involved in something like this. But a spouse who has reason to not entirely trust her husband (affairs, gambling etc), coupled with intense pressure from LE, being in the media spotlight with a whole country assuming guilt, may have a niggle in back of her mind that she wants reassured. I have no answer for why that meeting was taped, if it was taped.