The Isis myth was quite well developed by the 18th Dynasty.
I don't think Hatshepsut would have been a role model Nefertiti chose for herself, but it may have been imposed on her. Nefertiti was suppressed somewhat as Hatshepsut had been.
One other point that is worth mentioning. In the New Testament period, Mary Magdalene retained the name of her dead husband, John (Herod Philip II). There are other instances of widows doing this, but in the case of Mary Magdalene it may have been an attempt by her to associate with Isis and reinforce the role of her dead husband John the Baptist as an Osiris.
© Charles N. Pope, US Library of Congress. All rights reserved.