Confused by motives
I went to school with one of my wife's aunts and we've known each other since we were 9 years old. We've never been anything more than friends and I try not to think of her that way for obvious reasons. Anyhow, for the past few months she's been texting me a whole lot. She asks me for advice, tells me about what's going on in her life, and will ask me about food since we're both foodies. I'm curious what her motive is. Seems weird for her to just start doing that. Maybe I'm reading way too much into it.
What do you mean when you say "i try not to think of her that way..." So are you saying you have had flashes of feeling that way for her and you are attempting to squelch them?
So how long have you been married to her niece? Maybe it's just that she sees you marrying into the family as a way that you too can sort of resume a friendship. As long as the subjects of her texts stay on the sort of topics you've mentioned, I see no problem.
I have to strongly suggest though that you do talk with your wife about the fact that her aunt is contacting you on a regular basis. Because if it turns out to be her trying to get too close to you, and you hadn't told your wife, then it could get ugly. So be honest, even show her the texts perhaps.