What about giving her chunks of meatball? That should be big enough that she can pick them up, but would still be easy for her to chew with or without teeth. DD is 8 months, and we started giving her little bits of meat a few weeks ago. She hasn't had tons, but she's had bites of my turkey sandwich, bits of DH's corned beef hash while we were out to breakfast, bits of a hamburger I was eating, and some bits of my chicken when I was having some. She has the pincer grasp down, which makes it easier - I just give her relatively small pieces. She doens't have any teeth yet, but still seems to manage it pretty easily.
However, if it's soft enough (like ground beef) I dont' see why you couldn't just give her the same size chunks you do with fruits or vegetables, so she can pick it up on her own and then bite off the amount she wants.