“Mother of the Bride,” now streaming on Netflix, wonders what might happen if you find out a few days before the wedding that your kid (Miranda Cosgrove) is marrying the offspring of the guy who broke your heart. That’s what happens to Brooke Shields’ Lana. She arrives in Phuket, Thailand, for her daughter’s wedding, meets the groom (Sean Teale), turns around and sees that his father is her college ex, Will (Benjamin Bratt). Barely a minute passes before they both fall into a pond.