First of all, I wouldn't read too much into them using your wife as a go between. It has happened since elder bodies were invented in the 70's....
It really is all about what you want to accomplish. You have to negotiate your own needs for intellectual honesty with not wanting to appear "particularly apostate." The two are mutually exclusive.
If you wish to keep things as they are, then you have to play the game. I would be willing to bet that they will express the love of Jehovah to you. They will also be pointed in asking why you no longer attend meetings. (careful here...)
They will then offer a study with a mature witness.
I can't say that I would coach you what to say, but here are some things to avoid.
- Any phrase expressing doubts, esp about the FD Slave.
- Any expression indicating a problem with an elder, or future elder, or pioneer, MS, etc.....
- Any opinion at all that contradicts long standing borg BS. (like working a lot, beards, entertainment, etc)
However, you can use your emotional state as a tool. Also, you can feign offense at some who are not at the "head of the class" in JW speak. Elders have a tough time getting through depressed members. I think that is nearly bulletproof. Be vague, just say you are depressed, that you don't wish to go into it with them, and thats all....
I appreciate that this appears slimey on the surface, but you have to play their game if you want to do the fade. To be direct and honest is another alternative with a whole set of consequences that only you know best.
Speaking of which, I wish you the best in this.