personally I can see why she gave you the number for the anger management group.

The anger management therapy group that I attended was very helpful in teching me to look beyond the emotions of my day to day activities.

instead of my reacting all paniced or upset when things didn't go my way or something out of the blue happened I could look at it from the nonjudgemental point of view.

For example situations that are not associated to my being DID like I have social anxiety. standing in crowds makes me panic and sometimes a guy happens to look my way and he happened to look like my abuser.

Instead of panicing I can now say - ok we are in a public place, my abusers are dead and he is just looking for the bus that happens to be running late. Just use my grounding techniques and listen to my music because that guy is not here to hurt me. he just wants to ride the bus like I am. no panic and so on.

The techniques taught in anger management are somewhat DBT like in that they want you to look beyond the emotions to the main situation and the skills are taught in a specific order that is easy to memorize and use, and the skills taught in anger management groups can and do fit any and all situations not just anger.

Maybe you can go for a couple sessions just to give it an honest try and then if its not for you, you will know not just from the anger point of view or the shocked funny point of veiw that your therapist sent you there. You might be surpised at how the skills taught there fit just about every other type of situation in your life. I know I was.
and those skills I learned in the anger management class comes in handy alot.