My PD included ground meat in her list of things to feed my 9-month-old. My baby looks like she wants to vomit (as if she doesn't like the taste) after a few bites though. Should I keep trying or wait until she's older?

If you haven't already, perhaps you can try mixing the ground meat with something that baby already loves. For example, if she loves sweet potatoes, you can try sneaking a little bit of the meat in the spoonful of sweet potatoes and see if she notices. Sometimes, the texture of ground meat can be a bit off-putting so hiding or disguising it with veggies or rice/cereal could help :)