I don’t see how someone who put her own needs aside for so long to put her husband through two college degrees could be diagnosed as a narcissist. A narcissist could never have taken all that usury for so long
I guess we will never know the true situation of what went on. It does appear that Betty was in her younger years an incredibly selfless person, who over the years of manipulation and disrespect finally cracked and learned how to put herself first. Perhaps if she was appreciated earlier on she wouldn’t have done the awful things she did in the hopes to be recognised and respected.