Your mum was a lot safer before you posted clues to her password on a very large forum. If you can still edit, I suggest you delete that info. If not, either beg pg to edit it or go confess to mum that you have compromised her security and due to your idiocy she now really needs to get more savvy.

Just sayin'.

(AKA: There is more to security than unique passwords. And this is a major fail on your part.)