Sue's use of her maiden name is something very much affected by a floating timeline. Married in the mid 60s, Sue like an overwhelming majority of American women took her husband's surname. With Sue now married nearly 50 years later in funny book time, is her taking the name Richards far less likely? And yeah, it is far less likely. If the idea is for Marvel to package the Invisible Woman as Sue Storm now, then a few more word balloons like that will cement the point. Using Storm in cast listings also helps.