Amy appears to have developed some homophones in her speech, which makes communication more difficult occasionally. The two that come to mind are [mu:j] "music; raisin" and [a'ma?] "yes; banana". Oh, and [bum] "spoon; balloon".
Other recent new words include [apaj] (with unaspirated [p]!) "work" (from German "Arbeit", as in "Daddy's gone to work/is at work now") and [f@faj] "butterfly".