There are some tense inconsistencies in your piece. I know it's flexible in first person narration, but here, for example:
[my brooding was interrupted by my husband.] You use the past tense, but in the next line, you have your narrator describe her actions in the present.

I think you did a good job with the narrative voice. Your narrator really sounds like a traditional grandmother. I get the theme of loss of innocence here. Right before the italicized flashback though, I got a little confused as to what was going on.