Rose,
It doesnt take much to set off our thoughts, like the time you awoke, was near the time of your mom's unfortuate aneurysm. Also I have felt more anxious on anniversary's of death, and my first panic attack. Been that way for 13 yrs, every time I approach that dreaded day, I more apprehensive, I always think back to it.
A think a grief counselor would help in light of your tragic loss of your Mom, and being around others. Even people who dont have this disorder, find themselves having anxiety attacks here and there after losing a loved one. Plus do your accident, I think it would be therapuetic to be in this type support group.
Blessings,
Trish