TFA talks about the etymology of the word for liver in various European languages. I think part of the point of this article is how people thought of its function before, and part of their argument is in fact the name and etymology.
Anyway I think when you are in different emotional states your body does seem to feel it in ways that have probably not been fully studied or understood. Obviously for example your heart reacts to emotion. I know that therapists and others who talk about trauma talk about it as something impacting your body. Not to mention all the physical ailments which are documented to be aggravated by stress or have it as a major factor. So while it may seem naive to say your liver stores emotion, I don't think the idea is completely ridiculous. Your whole body probably has some form of reflected record of your health history, even if you can't really call it a literal "memory".
Anyway I think when you are in different emotional states your body does seem to feel it in ways that have probably not been fully studied or understood. Obviously for example your heart reacts to emotion. I know that therapists and others who talk about trauma talk about it as something impacting your body. Not to mention all the physical ailments which are documented to be aggravated by stress or have it as a major factor. So while it may seem naive to say your liver stores emotion, I don't think the idea is completely ridiculous. Your whole body probably has some form of reflected record of your health history, even if you can't really call it a literal "memory".