Here's another update on Grace's consonants. I recently confirmed that she really is using a uvular trill for a "k" (actually, realized that she seems to have two separate sounds for the "k" sounds in English, neither of them standard, but one of them is definitely a trill).
It's so much fun!

Grace's sound, roughly			Phonemes she uses the sound for (in rough "English-y" notation)
stops
d			/t/ and /d/
b			/b/ and /p/
d (back a bit)			/k/ (in "car"). We sometimes think we hear a proper "k" here but we're pretty sure it's a "d" variant, a bit like the "d" in an Indian accent.
p			/p/ in a whispered tractor sound and sometimes in "papa" (grampa). We debate whether this is a "p" or a "b", it may be an unaspirated "p" (and sometimes she whispers the whole word in an attempt at aspirating her "p"?)
nasals
n			/n/
m			/m/
fricatives & approximants
ʒ (zh)			/s/, /z/ /ʃ/ (sh),/tʃ/ (ch) /dʒ/ (j)
w (some version of it)			/ɹ/ (r) and /w/ - as in "wawa ("flower" or "water")
θ (th)			/s/ (word-terminal only) - as in "bus"
x? ʃ?			/tʃ/ (ch) (word-terminal only) - as in "beach"
Trills & funny sounds
[R] (uvular trill)			Used for the "back" K, as in "quack" and "chloe")
[ʙ] (bilabial trill)			Used joyfully and frequently for silliness
r̼ (linguolabial trill)			Used joyfully and spitfully for silliness