This is the PERFECT situation for her to experiment. She's on a business trip so you should encourage her to dress sexy, flirt, behave like a single woman and see if it's fun for her. If it works out that she picks a guy up and breaks the ice by having sex with him, then that is fantastic. She doesn't have to worry about your thoughts or pleasing you and to be truthful, it gives her an opportunity to not think about you at all. That would be between her and another man and you will be there to benefit from her stories and experience after she's finished. It would go a long way toward "normalization" of this lifestyle, which I believe is the single most important factor in getting a wife to become a hotwife or open to sex with other men or couples. The things we discuss and experience, we consider to be normal (at least those of us who are active in this lifestyle) but most people would consider us to be perverted and sexually deviant.
Much of what you read here is NOT how it works in real life, at least in my experience. I've read some of those comments from "dominant bulls" about this and that on this thread and they simply don't reflect common behavior either in my lifestyle experiences or with vanilla guys who have picked me up. I've had exactly 1 GUY who got too rough with me and I quickly pushed him off of me, got dressed and left. He had a very large cock, just like I enjoy. The trouble with him was that he used it to hurt me and I told him to stop, 3 times! Any guy, with even an average cock can find a way to hurt a woman with it during sex and pretty much every guy I've played with who had a huge cock was VERY careful in how they used it on me. I'm able to take it all and I enjoy it, but those guys (in real life) have had enough experiences with enough women that they know they have to be careful and patient when having sex.
I love MFM threesomes and when I'm meeting a new guy from one of the lifestyle sites I always ask my husband if he wants to to join us. Sometimes he does but mostly he doesn't, because he likes my sex life with other guys to be "uninhibited" for both the other guy and me. So we have certain guys we have threesomes with and I have mostly guys I have one on one sex with or I play with them and their wife as a unicorn or in a "cuckcake" role. We've never had a guy try to humiliate my husband in an overt way but some will push as far as he likes to experience. In reality, some guy you just met isn't going to tell your husband to suck his cock or to roll over so the guy can fuck him in the ass!! They aren't going to become violent in any form with me either, other than smacking me on the ass or face fucking me a bit. The rest of it that you are reading about really isn't common, from my experience.
My advice after all of this commentary is simply, do whatever you can to "normalize" extra-marital sex for your wife and then encourage that. It will be much simpler in the long run if you just give her your permission to have sex with other men and then leave her alone about it. Once she breaks the ice and then becomes accustomed to it, realizing that ....And Then Nothing Happened" (as my next LSM article will likely be) is a KEY to her pleasure and your gaining pleasure from her experiences. She can have fun, you can enjoy it and no matter what she did, you leave her alone to enjoy it and alleviate any concern of hers that something problematic, drama, will happen once you find out. She did it and then.....nothing happened. It was a great experience.
Mrs Hotwife