Lisa Ann Orosco and Erica Howton, I think you're not finding anything when looking it up because the family spelled it Melatiah.
And yes, she was one of his daughters. She first married John Steele (three children) and then married Samuel Stevens (two children). She lived out her years in Connecticut. Now that you have the spelling they and historians use(d), it should be easier to find primary sources. :)
I'm seeing many duplicates for her, all under varying spellings and surnames. Be sure to use the MPs here. The Bradfords have an extremely popular and well-documented line, so there's really no reason to be adding new profiles in that immediate area, especially multiple copies.