The Letter "M"

So today Addie was playing with her blocks that have pictures and letters of the alphabet on them. After a while she handed a block to me and said "M, mom!" and loe and behold...it was the letter M. I couldn't believe it! She also did the same with the letter A. All those times I try to teach her she acts like she isn't even paying attention and I am retarded to try. But she must pick up on something. Or she learnes from her best friend...the T.V. PBS kids and Nickalodeon do wonders obviously.