WARNING: Per wiki policy, Spoilers Off applies to Heartwarming pages. All spoilers will be unmarked.
Despite Daniel telling Grace that the rest of the family is just trying to figure out whether or not she's a "gold-digging whore", Grace and Alex are marrying each other out of love.
Becky noticing how nervous Grace is, and is very supportive of her future daughter-in-law as she tells her how the family thought she also wouldn't be good enough because she wasn't of blue-blood.
Becky: Stand tall, and fuck 'em. The only thing that matters, is what Alex thinks. And that, we know.
Daniel being the only family member to help Grace escape.
Doubles as Tearjerker, but after being consistently met with contempt by most his family, and considering himself a 'fuck-up', Alex, the only family member whose opinion Daniel seems to care about is devastated when he dies in his arms, begging him not to go and most specifically saying he needs him. After his death, Alex is the only one (other than Grace) to mourn him.
Their relationship in general is heartwarming being the two members of the family to truly have the most loving relationship. And their horsing around prior to the wedding is the happiest we ever see them in the film.
In a weird way, after hearing the story of how Mr. Le Bail is responsible for the Le Domas family's success, minus the Human Sacrifice thing, Grace makes a toast to him. In the end, Mr. Le Bail toasts her in return. Maybe he appreciated the acknowledgement.
