#1 Asking about your daily routine
This question isn’t strange for people who work away from home, but asking how your day went if you’re working at home is indeed unusual. If your girl is asking this question constantly, she might be planning to do something while you’re out.
#2 She’s preoccupied with her thoughts
If your girl is preoccupied with her thoughts and seems lost, she may be planning to break up with you.