It is time who is stuck, not I

Stuck 

a verb that describes a lack of motion

The original question was his:

Why are we stuck in a circle?

Her answer was:

It is time who is stuck, not I.

Now she is trying to put words to it:

telling him what she knows to be true

Time is one hurdle, but not the only hurdle 

and though she knows it is her reticence that is the real issue 

she cannot explain it 

lacking the right words, she describes only

what time is not, as opposed to 

what she is 

Stuck 

a euphemism for surrender  

^{thanks to go ahead I'll listen for title}