You realize you reacted too quickly without giving yourself time to settle and think first, and you realize your comments were rather loaded. She's setting a boundary about being the target of impulsive outbursts. I think you are right that it may be a good time to review the skills that will help you sit with your feelings before you respond.

This reminds me a great deal of how my husband used to react very impulsively when he was upset, and instead of a therapist being the recipient of his reactions, it was me. I'll be honest. It was painful and a beat down to be on the receiving end of his emotional outbursts. It caused me a great deal of anxiety and harm over time. My therapist worked with me so that I could hold some clear boundaries on that kind of treatment rather than to continue to accept that kind of treatment. I made it clear that I had no problem hearing his anxieties, hearing his fears, hearing his doubts. But lashing out at me personally was not okay. I would respectfully and supportively listen to his concerns so long as he didn't attack me out of his own fears which really weren't about me at all; I was just the "safe" target and outlet, but what he had to understand was that his outbursts at me might feel oddly safe to him because deep down he knew I loved him and would do anything to support him, being on the receiving end felt incredibly unsafe and was wounding me internally.

It took awhile, but when he started slowing down and thinking before speaking, when I consistently called him on those occasions when he lashed out instead of thoughtfully communicating, he found the real heartfelt and thoughtful communication we starting having was much deeper, much safer, and much closer than anything we had ever had before.

It sounds like your therapist is establishing a very similar boundary in hopes that you will again actively work on utilizing the skills that will foster better emotional regulation for you, and skills that you can take with outside the therapy room. Sometimes we backtrack and regress a bit; we forget to use what we have learned. We regroup and relearn, dust ourselves off and start again. That's okay. I admire your honesty and introspection. Keep at it.