Client felt worse after coaching call

Yesterday I had a coaching call with a client which uncovered a reason and went deep into one of her causes for overeating. It got really deep, and she struggled and said a few times to me that she felt like it was a little much. After the call, she said she went and overate because of what came up in the call (as well as other stressors in her life).

For some reason, I suddenly have this pit of self doubt in my mind. I feel like my coaching call backfired, but at the same time I know that I had to dive deep into this with her.

Please help coach me on this.