We're all human and sadly, sometimes when one is coaching many different runners at one time, things will get lost or diverted. I work with a virtual running coach and it is not unusual for my emails to go several days without a response.
But know that a running coach can only do so much when it comes to injuries. We cannot diagnose, nor can we determine a plan to keep this from happening or speed your recovery.
I am sorry you had a poor experience, but maybe she was unsure how to tackle your issue.
I hope you are well on the road to recovery!