How do you guys deal with questions from TBM nieces/nephews without overstepping?

so far I've kept it vague and just told them I don't go to church and some people just don't when they've questioned my about it but I of course can't really get into why. I'm kind of worried about the deeper questioning as they get older.

My nieces are as TBM as 6 year olds can be and recently asked me what church I go to. I think they knew other people go to other churches but I really don't think they had heard of people not going at all. I told my niece I don't go to church and then changed the subject quickly.

Later the same day it came up again with her asking me if I was going to church the next day and I said "no, are you?" (anything she asked me I just answer quickly and then ask something in return) and she said yes and asked why I don't go to church, I told her I just don't and some people just don't go to church. Meanwhile, I'm waiting for my brother and sister in law to jump in and say "honey, leave your aunty alone about this subject", but they just sat quietly probably so proud of their little missionary. My other niece tells my first niece that some people don't have a church and so my niece starts saying I could come to their church. I just said "ok, maybe sometime"...because I just wanted the questioning to be over. She asks me "what do you do on Sundays?" and I told her I like to play with my dogs and read (of course not wanting to say anything she is taught as a sinful Sunday activity) and asked her what she does on Sundays.

Eventually the kids all went to the bathroom and I asked my brother what he does want me to tell them and he said he thought I did fine. I just don't want them to be stressed out that their aunt is a bad person who isn't going to make it to heaven with them. I'm sure the questions will intensify and someday when they are older I will be more open with them I guess, but I'm not sure how to do it without overstepping, I'm hoping to figure it out on the fly.

/r/exmormon Thread