Jody, it would be best if you trained her to sit and wait for food. It's a pretty simple process, and it ensures that she knows who is the boss in the house. Labs are so
easily trained with a food reward, it would probably take you about 10 minutes. It won't matter what her age is, or how long you have had her. She'll do anything for food. There is nothing more important to a Lab than food, and if she knows you're in charge of the food, you become the most important person in the house. You should probably stop feeding her in the crate.
This video shows training outside, but you wouldn't need a leash if you're inside. Once you've got "sit" established, do sit and stay as in the video. A lot of dogs are not happy to "lay down", so that's one that we didn't sweat at the get-go. Once you've trained her to sit and stay, do "leave it" (put a treat on the ground and tell her to leave it, then reward her with a different treat for a good "leave it") Never let her eat without your permission. When I talk about treats with training, I'm talking about a piece of cheese or hot dog chopped into about a quarter inch dice. Keep the bulk of the treat in your hand, making a fist. Feed the treat with it pinched in the crook where the tip of you thumb meets the bend of your forefinger when you make a fist, otherwise she'll nibble - not on purpose - your fingers at first. You can also refuse to let her have the treat until she is "gentle".
Our dogs are
terrible jumpers, and I don't know that we'll
ever get them calmed down enough to not jump on company when they arrive. But in our home and in our yard, we are the boss. (Just don't let them get out the front door!)