Friends trying to 'save' me

[Esquilax]

Any tips for doing this nicely?

Go to church, but do what none of the other people there will do: take it seriously.

Bring a notepad. Start reading a bible as prep work a day or so beforehand, maybe even see if you can get the topic of the sermon from your friend ahead of time so you know where to direct your reading. Be educated about this topic in ways none of the christians there will be, and don't share in their rose colored glasses. Once you're in, start taking notes.

Afterwards, start asking your friend questions. Not the fuzzy, feelgood crap they ask among the group, ask the hard questions about contradictions and stuff. You can hardly be blamed for investigating things that deeply, and showing the sort of enthusiasm your friend wanted from you, but at the same time it shouldn't be hard to come up with questions that are valid enough to make any christian uncomfortable.

Chances are, you'll stop being bothered about going to church once you prove yourself to be more trouble than you're worth. They want you to just go with the flow, but there's nothing to say you can't do what your friend wants, while still maintaining a critical eye. And it's not like she'll tell you that she just wanted you to accept it all uncritically...