bowel tx after pacermaker insertion

my almost 91 year old mother recently had a pacemaker inserted.  SHe was given a prescription in the hospital for colace.  I have always been told that heart patients need to have something on hand to soften as well as aid in evacuation , but not enemas, or in my mothers case a 50+year old ear syringe that she tells me she has used when something"gets stuck".  I think now with her new dx. and pacemaker she should eliminate the "syringe"routine and use the colace, more water and exercise, and occasional milk of mag.  I am concerned with a vasal/vagal response if she use s the syringe, as she lives alone, and is very stubborn.  DO I have my information wrong or should I just return her to her home and hope for the best.