Who voiced her? Didn't sound like Tara Strong even though there was a slight Raven-esque quality to her voice. Actually, it was an intriguing blend of Raven and Daria.
Ingrid Nilson was the voice of Maud Pie. Here
is some background info on her.
On another note, hearing her openly say she loved Pinkie Pie just really touched me. The small smile on her face, which she afforded for nothing else, just made me tear up. It really did, and it gratified me to hear one character openly say they love another character. It was just so sweet. I want more of that. More love. Put it on TV.