What you'll find as you go forward with this is that everyone has a different experience with their band. Some folks eat a few bites, and are ready to vomit (like your coworker. Sounds like she's too tight.) Others, like me, have never vomited post-banding. I've been stuck a few times, because I ate too big a bite and didn't chew it thoroughly enough, but those events are rare, and they teach you how to live with your band.
As to diet, I can eat just about anything, as long as I cut it into small enough bites, and chew it thoroughly enough. Some things go down easier than others, so I learn what works, and what doesn't. I can eat toast easier than I can eat bread. So if I'm in a restaurant and want to order a sandwich, I ask for the bread to be toasted. (Then I only eat part of it, while eating the sandwich filling with a fork. I don't have room enough for a full sandwich anyway.)
Managing a meal and enjoying it is all about doing what works for a bandster. For example, if I go to Olive Garden and order their Steak Toscano, I ask to substitute additional steamed vegetables instead of the potato. When the meal arrives (a 12 ounce steak) I cut off a third, and put the other two-thirds of the steak and two-thirds of the veggies in a to-go box. Then I socialize with my friends, and eat my steak and veggies. By the time my 4 ounces of steak and that one-third amount of veggies are gone, I'm finishing my meal about the same time my friends are finishing theirs. It's a non-issue, and I have another two meals with me in the to-go box. (Hint: Order the steak one level less-done than you might otherwise, and the reheating of the leftovers won't hurt it. That works well for me.)
It's all about learning how to live with the band, and what works best for you. As you go along, you'll sort things out. And if you avoid known triggers and bad behaviors, you'll do fine. Education is vital, and the key to success with the band. Learn everything you can about the band, how it works, and what others have gone through. It sounds to me like you're on track to have a great experience.
Good luck!
Dave