Christine,
That sounds like a wonderful step forward. A sign of first light? Whether you believe it to be spiritual, psychological or other, it seems like you are on your path of healing. That dream tells a lot about you, your mom and especially the relationship the two of you had.
I truly believe that in order to get through the loss of a parent, child, or closely held soul, one must completely surrender each second, minute, hour, day.
Feel the grief...
We should not try to hide from the sadness, anger, loneliness. However, also accept the smirk, smile or happy tear that may cross your face momentarily. Sometimes those feelings may seem random but I don't believe that way. I have faith that it is some sense; we think is turned off or we even know we have, receiving messages. The way you seem to feel about your mom sure makes me think that she would only be sending you happy, wishing well thoughts?
When you take that step and let yourself go; let yourself feel the scary boogie man parts of grief, many times, it really ends up just being a pin prick. Kinda like getting a shot at the doctor. It ends up only hurting for a very short while but the benefits can be life changing and long lasting. Best of all, they are healing kind!
Carpe diem - Seize the day! Rest at night. You will have more of those moments with your mom.
I wish you well,
Mom wishes you well,
God wishes you well...