Find the person who did it, treat her to a nice lunch, and beg for the URL. If she uploaded it to Roots Web World Connect, ask her what year span she set to privatize it. That is, you don't want living people showing up with birth dates and mother's maiden names, so when you upload you have it reduce people to "living" in their surname and nothing else; no first name, no dates, no places. They let you do it for people born 80, 90, 100 years ago; you pick. So, if she used 100, you'll need to know which great or great great grandparents were born over 100 years ago, so they will show up with their real names.
If no one has researched your family tree, it isn't there. Most people's aren't. The few who are brag about it, which gives their friends the idea that everyone's family tree is on-line.