Thank you! So it's not deleting a picture as I thought.
She was obsessing over an ex friend of hers who had become successful in becoming a hostess and now is living a life of luxury, while she keeps failing because of her height. Now she won't be concerning herself with that girl anymore and her heart will be at peace. Something like that. It is not clearly said nor shown in any other way, but I think that's the moment it happens, when she decided to delete that thing.
That's why I thought it was important and should be translated.
Maybe quit a group chat or even better "unfollow" someone's SNS account?
Whatever the case, I put "Unfollow - Confirm", since it makes sense.