My guess is Mrs. Sanford is not all that amused that Mark is telling the world that his mistress is his soul mate.
If I were to do such a thing, Mrs. Trumandogz would buy a woodchipper and copy that scene out of Fargo.
If I were Mrs. Sanford I would pack up all of his personal items -especially the dirty socks and underwear - and I would ship them off to the soul mate.
I would also send her his “maintenance” items - hair dye - fungus creams - that sort of thing.
I might also place a picture of the children in the care package to help the soul mate understand the impact of adults engaging in narcissism.