Not sure if it will apply to your wife, but I was pain free, within about 30 minutes of doing the epson salt portion of the flush. Don't have a clue if it works like that for everyone, but I now would never leave home without a capsul or two of epson salts, just for peace of mind. Mind you, I haven't had a single attack since my second flush though, but after going so long in pain, it's hard to forget how it feels, so I just feel safer with a few in my purse. lol
In case you are wondering what symptoms went away once I took the epson salts, chest pain was a biggy and gas and bloating that was extremely painful. It was such a relief, I couldn't even complain about having to run to the bathroom, so much from the epsoms. Some things are just worth it.