Mike:
bear in mind there are many ways up the mountain!
whatever church or religion that draws one closer to God is the "right" religion
for that person, beit buddist, (much as i hate to say it) muslim, the various christian churches, and even those that we might look to as being pagan (not satanist, but those that look to a singular higher power), and yes even pentecostal.
your wife admitting to you that she found solace at a pentecostal church tells me she is open to God and as such has an opening for you in her life as well.
at least she is acting in a much more positive way than my first wife, who had no religious beliefs at all, and had no interest after doing no more than was necessary for us to be married in the church. very hard to make a marriage work if one has a belief and the other has not even a shred of belief.
do what you feel is right, stay consistent, talk to the man upstairs, and have faith that
things will work out as they are planned by the dude that has control of the cards.
if you ever need to talk, just pick up the phone, you have my number.
bob g