Good for you! Sounds like you are actually coping pretty well.
The fact that they don't want to see her for ten days is likely a good sign. If things were grave, she would be in the ICU and they wouldn't be letting her walk free.
A little headache is not necessarily a big deal, even when you have an aneurysm. If she starts complaining of the "worst headache of her life" or if she is describing a headache so bad that her whole body hurts, then somebody should get her to the ER post haste.
There are treatment options these days that don't involve open brain surgery (craniotomy). The survival rate for cerebral aneurysms has improved dramatically over the last ten years, so even though this certainly is a big deal, there is a lot of hope too.
Best wishes to you and your family.