Hi David
How fun to discover my cousins through this site :)
I have found Marise on Ancestry and thank you for her email.
GedMatch.com is a website where anyone from any DNA testing site can upload their raw DNA file (in your case, from Ancestry). You then are able to find many more matches from all over the world and they have a lot of tools that Ancestry lacks. It's free to do and once you set up an account, there are very easy directions as to how to get your file uploaded. I find that the combination of the two sites is very helpful.
I've also uploaded my Ancestry file to Family Tree DNA (FTDNA.com), which is yet another database. They charge a fee to unlock your matches, but it's reasonable. So all of that off of 1 DNA test!!
Nice to meet you :)
Best,
Annie