My mother, 86, wants to register lasting powers of attorney. Her only relatives are myself and my two siblings, and we typically disagree a lot. We also don't really trust each other either over money or welfare. I worry that if the most obvious, responsible one (me) is given it, the others will be resentful; but I'm also not sure how it would work if we shared it between three (jointly not severally) and couldn't agree. Has anyone been in this position, or have any suggestions? She doesn't want to use a solicitor or professional.