This is going to be hard, but there is a
very good chance your wife is seeing
someone else. She is using the therapist
as an excuse, and that's why you can't go
with her. The excuses she is giving you
are very common of someone who is having
an affair. I sincerely hope that is not
the case for you, but I have gone through
this same thing, and the diologue and
stories I got were identical to what your
wife is saying. In researching, I found
this to be the case 99% of the time.
It's amazing how many people actually go
through this, and get all the same lies
and stories. Just remember.. A
marriage doesn't develope problems unless
there is something or someone infiltrating
it, whether it be drinking, gambling or
adultry, but there is always a reason why
one partner "suddenly falls out of love or
gets confused", and it's rarely the other
partner's fault. Sad to say, but true.
Good luck.