Have you ever tried to take food from her before? If you have without any problems, I wouldn't worry too much. Maybe she's just grumpy today! Dogs have bad days too.

If you haven't or this is a regular occurance, this is what I would do. Hand feed her everything for a few days..works better if you feed kibble! Feed a few pieces at a time from a cupped hand--like you would offer sugar cubes to a horse. Keep your hand closed if she seems grabby. Open it and let her take the food when she's being good.

I also do trades with my dogs. If I want to take something from them, I offer them something else. That way they learn that it's not a bad thing to let me have stuff. Eventually I give them back their treasure, if it was something safe for them that they are allowed to have. This works well not only for food, but for getting them to give up something that could hurt them or your favorite shoe!

Make Sequoia work for her treats. She doesn't have to run the I-rod to earn a jerky treat, but she needs to put her little butt on the ground, or lay down, or do a trick. Whatever, she just needs to follow a command! It's part of a nothing in life is free training program and it works!

Good luck!