It may be possible to confirm family relationships with Michelle by comparing test results with other carriers of her ancestors' mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Michelle:
Michelle, have you uploaded any of your FTDNA data to GEDMatch? It's a great way to find genetic cousins who tested with Ancestry, FTDNA, and 23andMe.
Many of us take the extra step of using GEDMatch.com to take advantage of their powerful utilities. Once we've registered there we return to WikiTree and select Add -> DNA Test Information above, then press the "edit or enter more details" button to enter the GEDMatch ID we're assigned, like T123456 (mine is M142637).
Michelle, I added you to the Puerto Rico project in case you do get some time to work on this part of your family. Stop by the project page some time and leave us a note about your Puerto Rican relatives and anything that we can do to lend a hand.
Michelle, you're very welcome to join our Puerto Rican Roots project, where we're working to improve the profiles of ancestors associated with Puerto Rico and to connect them to our global family tree.