In answer to your question, yes I suffered chest pain when having a gallbladder attack. Tightness in the chest, along with a sharp stabbing pain between the ribs and shortness of breathe. I know how your poor wife feels :( It is compared to having a heart attack!
I suggest she gets it removed ASAP, it has only been 4 days since my operation and I feel 150% already. I was in hospital for 2 days, been home for 2 and I'm starting to become mobile, even enjoying a short walk around the neighborhood this afternoon!! I had lap-choley surgery which is a shorter recovery time (4 smaller incisions rather than a huge 7 inch incision). It still hurts to sit up for too long, or to get up from lying down but I can guarantee it's nothing compared to what I went through when having the attacks.
All I can suggest is that your wife follows a strict low-fat diet...I went totally dairy free, except for skim milk, and didn't suffer as much. However, in the last week towards my surgery, I had frequent attacks and even a glass of water would set off the pain.
What helped me on occasion was lying on my right hand side with a hot water bottle underneath and deep breathing. I really can't suggest much except to get to your GP ASAP!! Pain killers DONT WORK and cause even more problems with your stomach if taken over extended periods!!
I am still following a fat-free diet, and intend to do so for the rest of my life now, regardless that I'm missing that naughty gallbladder of mine!
Let me know how she goes..