Grandbaby came to tea!

She was as sweet as could be !  She is starting to talk a bit: as we both go 'up' the stairs on all fours we shout 'up!' When she sees the ducks in the bathroom she quacks with gusto! And today as we were looking at old birthday cards she pointed to an 'a' and said 'ah' over and over again! ????  Is she being taught letters at nursery school or was that just a fluke?