I tried putting her chair up to my table, but she still freaked. She did finally calm down and just sat in her booster, but no food was on her tray as she kept throwing it. I was able to feed her a yogurt. She cried, but ate it as long as she could hold her soother and put it in her mouth (gross). So progress has been made somewhat. I'm going to suggest to her mother to keep putting her in her highchair at home as I think I may know what is going on.
Before she was off sick, the dcg was cutting some molars. She would go in her booster fine, but when she started to eat would cry (her mouth hurt). So now I'm wondering if she associates the booster and eating with pain?? Maybe I'm looking too far into this...but I figure if I keep putting her in there and showing her that eating is not painful (always) then we may get over this (hopefully).
Thanks to you all for your input!