Red Gem Necklace : MM10
You pressed the correct button.
It seems the letter corresponds to the alphabet position matching the word’s length.
Like has 4 letters, and the 4th letter of the alphabet is D.
Share has 5 letters, and the 5th letter of the alphabet is E.
Comment has 7 letters, so the 7th letter is G.
Therefore, the correct answer was G.
You press the G button beneath the frame.
Moments later, a section of the wall beneath the buttons slides open,
revealing a treasure inside— a necklace set with a red gem.
You reach into the small hidden compartment and retrieve the treasure.
After securing the treasure, you leave the area.
You have successfully escaped.
You have secured the treasure.
Congratulations!