using caps

[becki]

I have a question about using caps,
our son got marked wrong on a question, I taught him this and I feel I am right, but the teacher said he was wrong. It was sentances using caps, and this is the sentance:

"Did you let the dog out?" Mother asked.

I said mother should be in caps and she said it should not. I say that mother should not be in caps IF the sentance would have said: ... my mother.
but because it just said mother, I think mother should be in caps. am I right
Becki

[Voxxi]

Yes:
http://www.yorku.ca/gcareers/grammar...al_letters.htm

RULE 5: Capitalize words that show family relationship when they are used as part of a person’s name or as a substitute for a person’s name.

Example 1: Today is Grandmother’s birthday.

Example 2: Where are we going, Dad?

Example 3: Is Uncle Gene coming with us?