One day she decided to not go to her favorite coffee house
Do you know why she didn't go to the coffee house?
She decided to take a break from her regular routine.
If she is happy, it is okay to do things different. It does not hurt anybody and it will make her happier.
I don't know why she is breaking her routine like this, though. What if she wants everything to be new now and decides to break up with me?
Don't assume the worst based off of speculation. There's a saying: those who suffer before it's necessary, suffer more than necessary.