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Leo, don't even think about Layang² for your non diving wife.
My advice was trying instead Lankayan.
You are actually required to go no deeper than 40m and that is a wise rule. You are threatened with missing a day of diving if you violate that rule. Of course, I have heard many examples of people violating it without a problem and of others where the divers were required to miss dives. It's a little too easy to blow the depth so I suspect it happens more times than not - but it is not supposed to be. Yes, most dives at the Point are "follow me" down over the edge of the reef to 35-40m, out into the blue for 5-10 minutes of staring down and around then back to the reef for a gentle ascent back up the wall to a safety stop on the reef top. If you are uncomortable with that, I suggest you stay close to your guide (above him by 5m and just behind so he is easy to see but you are out of his bubbles) and keep an eye on him. When he sees something and points, you'll be the first to know and can get closer. Another option (that misses the point of going to LL, IMHO) is to skip the Point dives and just do the great wall dive down to 30-35m. You'll likely miss the hammerheads but you will have more comfortable dives.