I'm a regular poster here but wanted to post this anonymously just in case

My immediate supervisor is currently on leave with her 2nd child. We did not work together when she had her first nor when I had my first (aka, I don't have any history of how she's handled leave in the past).

In our current positions, she is senior to me, but our functions are different from each other and my job doesn't really depend on hers and vice versa. I took over a few of her responsibilities while she's out, but overall, my day to day job hasn't changed very much at all (and what I took over I was doing to some extent anyway). So I've been really baffled by the fact that my boss is contacting me to "check in." A couple of times the questions were generally how things are going, which I took to just maybe her wanting a distraction, but then other questions were specifically things about whether I'm doing X or Y, all of which are a part of my regular job and the answer can't be no unless I've pretty much stopped doing my job. I've always sensed some trust issues on her end with me, but any attempts I've made to address them have always been written off as misunderstandings and my performance reviews have been nothing short of stellar for years.

In my previous position, I managed a department, as my boss does now, and when I went on leave, I was 100% disconnected. I set up my team such that they could do anything that I was doing comfortably, and never once had any concerns about whether they were getting things done. So I'm wondering if it's my previous experience that's coloring this, or if this checking in on her part really is odd or if it's actually normal and I'm bristling for no reason. Would love some other perspectives.