Matt's existence seems empty with her. She is unable to bear children and likely has no idea how to raise them, and on the day she is home alone she doesn't even cook! She rewarmed what Amma had cooked and given her for dinner! Doing home improvement projects only goes so far to fill one's time. Why he doesn't just leave is baffling.
If, indeed, Matt was the one who wanted marriage with her, he should realize the major reason she avoids marriage is because she doesn't want her assets going to him. Any other reason she might have told him or her audience is bull. Her avoidance of marriage, if it is she doing the avoiding, is reason enough for a normal man who is interested in marriage to call it quits with her.