Adopted daughter wetting and soiling at 19??

Hi all, I am honestly scared and confused and worried about my 19 yo Adopted Daughter. She was neglected as a baby and toddler and was placed in foster care at 4 and we adopted her when she was 5. She was a great kid growing up and has grown into a very mature, strong and independent woman. However through her life she has always struggled with continence issues. She has always wet her bed since we got her and although we have been to numerous specialists and tried almost everything on the cards she has had no success at waking up dry. She is usually okay during the day however she goes through periods of having daytime issues and accidents, usually bladder but also occasionally her bowel. Often she gets the sudden urge to urinate but won't make it or she completely looses control. Does anyone have any advice?