Mari-Lou A's answer covers the technical aspect perfectly, but we need to understand your intent.
"She didn't even have any thought left."
The technical problem is that thought needs to be thoughts, but that is not a complete idea. Is there something specific she doesn't have any thoughts about?
When she thought about the wedding, she drew a blank. (suggests she might lack imagination or she may need some new inspiration)
She didn't have any thoughts about the wedding. (neutral, she may think of something later)
She had no further thoughts about the wedding. (suggests, but does not state, that she doesn't want to think about it any longer)
She was done thinking about the wedding. (definitive, she does not want to think about it ever again)
If there is no specific situation, you may intend to write:
She was suffering from loss of interest. (loss of interest in all her hobbies and personal relationships, this is a symptom of depression)
She was lost at that time in her life. (aimless, the reason could be any number of things depression, addiction, fresh out of University, dead-end job)
Her mind was clear. (this is a good thing, nothing is bothering her, she is free to think about something new)
The following would seem strange to a native speaker:
She drew a blank when she thought about her life. (people typically draw a blank about something specific)
When she thought about her life her mind went blank. (grammatically correct, but would be puzzling to the reader)