My M.I.L has her two children as lasting power of attorney. One son has taken it upon himself to set up online banking in M.I.Ls name to deal with all her finances & he won't give the other son (my OH) the password to check all is ok. Since this has happened the brother seems to be splashing his cash on new kitchen, windows etc when only 3 years ago he was asking my OH to lend him money. I'm very suspicious but my OH doesn't want to 'rock the family boat'