We’d already been assuming that Regina will take her heart out and Snow will convince her to put it back in, but this is an actual heart burial. This isn’t a thing where Snow sees Regina as she’s yanking it out, and goes to speak to her and convinces her to put it back in. Regina’s actually gonna bury the thing, probably in secrecy, and I dunno that they’d show her burying it and then digging it up again in quick succession.
I wonder if seeing Robin with Roland might actually be the thing that eventually convinces her to go dig her heart up, because she sees their happy moments and wants to be able to remember how her own happy moments with Henry felt, despite how much it hurts now.