i'm a survivor of incest by my own father at a very young age. i've had depression for 15 years now. when my depression is very severe, i notice that my voice is different. it may have sounded like i had an accent. i noticed i sounded like british sound, even though i don't know much of the nuances of the sounds other than what i heard out of what little hearing i can get out of my hearing aid (i''ve been deaf all of my life). it is possible your daughter is dissociating, since she doesn't notice this. but, then, she may be just be too depressed to even care or notice the difference in the way she speaks. i notice because of my attention had been put onto my speech for many years while i was growing up, so i can learn to speak. yeah, it sure did feel different when i speak whenever my depression is so severe. i could be wrong, my speech definitely sounded british to me. i hope this helps and i wish you and your daughter the best. if you wish to talk more, you're more than welcome to. i pray that she will be able to heal. it will take time, but it can be done. i did it, despite that my depression continues to linger. but, i'm happy to be able to get over the issues that i had with the abuse that my dad did to me. i'm so sorry that you and your family had to go through all that. but, i am so glad that you got yourself and your kids out of that. whatever happened, don't blame yourself. it was not your fault. and, the same for your daughter.