Re: New website
Have you set up two accounts here? You say you were sent a second 'welcome email' for your new website, this would suggest you now have two accounts. Seeing as the sites are for two different people this is a VH requirement anyway (to have two seperate accounts)
So, presuming this is what has happened then you need to log-in, and publish with YOUR account details as before for YOUR site and you need to log-in and publish to Your MOM's website with the NEW account details.
Don't aim for success if you want it; just do what you love and believe in, and it will come naturally.