How to not overthink when my boss said she wants to talk to me on Monday

For context: I drive for work - picking up / dropping off / run errands for different sites. I’m provided a work phone.

I clocked out and didn’t realize until I got home that my boss texted me around the time I left to call her when I had a minute. Not sure why she asked for me to call because she just calls on her own usually.

I call and she asks me if I’m clocked in and I said no but that I can definitely talk. She said no let’s wait until Monday to talk. I asked if everything was okay. Later on texted her asking if everything was okay again. She texted back that everything was fine. Still not telling me what she wanted to talk about.

Just found it strange because whenever she needs to talk or has a question for me, she will just call on her own or just texts me to come by her office before I leave.

I do what I have to do always so I know I shouldn’t be worried at all. I did have to pick up some items for her today but they weren’t ready and I texted her that but never got an answer which was weird because she’s very quick to respond. Maybe she was bothered? Idk

I feel like if something was wrong that she would ask me to see her in person compared to asking me to call her.

Just annoyed me a tad.