Robert, why don't you suggest you get an open ticket and agree to return to mainland Spain if any of her concerns materialise. It's an option.For what its worth, I'm of the opinion that you're about as safe/unsafe in Morocco as you are anywhere in mainland Europe, providing that you steer clear on the major cities and/or tourist traps.
Right now, I'd certainly think twice before holidaying in London, Paris, Rome, or any other major city. My travel plans are now based around smaller cities / towns rather than the larger, high profile places.
I suspect that the Moroccan government is doing whatever it can to protect its tourist industry and whilst I'm mindful of what happened in Tunisia and more recently in Sharm, I'm also mindful that there have not as yet been attacks by lone terrorists/sympathisers against lone travellers.
Will I be traveling to Morocco this winter?
I'd love to, as we're already heading to Southern Spain, but Mrs C is going to take a bit more convincing to get her over the water to North Africa.