Ok (so I watched The Scene..thanks @theleftpill). So Sherlock kinda deflates from his deductions the moment he sees the name on the coffin lid.
He knew who it was for because, as it was pointed out when the episode aired, the dead dont write on their own coffins, its the living who do it in the memory of the dead. Those were the words that would’ve been on Molly’s coffin.
This again emphasizes what I had posted some days back; that it wasnt Sherlock realising that he loved Molly, it was the acknowledgement and public acceptance of the fact that did him in.
Eurus knew a lot about Sherlock, but didn’t understand how he functioned in order to feel those things. She didnt try to learn about obvious facts about her brother, but what those facts meant emotionally! What was the impact, the consequence, the reasoning, the reaction due to those facts.
I am going to HC that Eurus knew he loved Molly, but couldn’t understand how or what that entailed.
Thats why that entire scene. So we now have it from a person with beyond-Newtonian brilliance…Sherlock loved Molly. Yep.