A lot happens in “Say Yes,” almost all of it compelling. Jadis (Pollyanna McIntosh) insists that Rick and his crew bring her even more guns than the shitload they reclaimed from the soldier walkers. Tara decides to tell Rick about the Oceanside group. (Might the women at Oceanside be willing not only to join the fight, but to hand over some of their guns to the trash dwellers?) And what is with that giant female walker Rosita encounters with the bloated head and neck? Is that just normal decay or it is some new mutation they aren’t yet aware of? It’s getting a little tiresome, though, to watch Rosita (Christian Serratos) stomp around in an unchanging state of stony-faced rage, telling everyone she wants to be alone. At least she eases up at the end of the episode, recruiting Sasha (Sonequa Martin-Green) to help her kill Negan, even though that’s unlikely to end well.