I checked the 1910 Census. It shows Mallie in the summary page. That's not Mallie, it's Mattie, named after you now know who, and George's twin. Looks like the writer forgot to cross the t's (or the reading machine didn't pick it up). Also noted the numbers 16 under 'Number of years in present marriage' as 16 for both. Rounded to nearest year that's correct. That says nothing about whether Tina, or Christ, was married to someone earlier.