This is one of my pet peeves. Strong acid doesn't dissolve flesh, not really. It will denature it, and make it flakey and fragil, but it doesn't really break it down into liquid like movies always portray. At best it will make something like a broken sauce over extended exposure. Bases though, will liquify you. Strong acid will sting and turn your skin white and itchy, looking almost like a burn from a very hot surface. If you've ever touched an electric stove and had a tight white patch; something like that. But a strong base will eat and eat, making your skin slick as it is digested. If you get acid in your eyes, you're going to have a bad time, but you might get to keep your vision afterwards because the burn is very surface level. However, if you get a strong base in your eyes, it will continue to burrow down until it is neutralized and ruin your lens like a sucked on hard candy, and you are very likely fucked long term.
Long story short, lemon (acid) makes civiche, dish soap (alkaline) "cuts grease", aka digests fats.
If your brother gets suicided, you may fear those potentially responsible and have strong motivation to carry their water. I wouldn't be surprised if Mark and Ghislaine continue to provide convenient denials and clarifications. If they didn't have the spine or moral compass to do the right thing before, than I wouldn't expect them to do the right thing now.