Personal experience: my gf worries a lot about me when I‘m on business trips. She wants me to check in just to know I haven‘t been in a car crash or similar. I oblige, always annoyed but I do, because she has a point. In other situations, that would feel like I‘m twelve and shouldn‘t be out past curfew.

Might not be much physical effort, but the mental effort of telling someone „no, I‘m a responsible adult of sound mind, the situation is under control“ can be immense. Why would you even doubt that?

It might not feel like that to you, but it sure does to me, and I suspect it does to her. Would you feel better if she answered „I‘ll be out a little later, catching a cab around 4. Love ya honey 😘“ while getting railed by another dude? Worst case that‘s all you would achieve.

I‘d advise splitting this up into two problems: You wanting her to check in more often. You worrying she might want to cheat on you.

Do not mix them with each other, cause neither‘s solution will do fuckall for the other problem - at least if problem #1 doesn‘t exists solely because #2 exists.