The poignant absence of Princess Diana from her sons’ lives as they marry and have children always brings questions about how she would have related to their spouses.
A Sun Cancer with an Aquarius Moon, she gave the impression of doting on her boys but could be fickle and emotionally unpredictable with friends. Her Moon opposition Uranus hinting at the loss of her own mother through divorce in her childhood would make her less trusting of women.
She’d almost certainly have found Kate easier since Kate’s Cancer Moon and Jupiter in Scorpio chimed with Diana’s Sun; and Kate’s Mercury Venus in Aquarius would have resonated with Diana’s Jupiter.
Meghan would have been more problematic with her Mars in Cancer clashing with Diana’s Sun with her Saturn Jupiter in square making for a competitive, argumentative and rather blocked chemistry. Meghan’s Leo Sun squared Diana’s Neptune so she would have found her mother-in-law evasive.
What would in all likelihood have caused problems is that both Kate and Meghan have their Pluto on Diana’s midheaven, hinting at potential struggles over power and position. It would be especially the case with Kate since she has her unyielding and duty bound Saturn conjunct Pluto, both on Diana’s midheaven – and Kate would naturally always take precedence since she’s in direct line.
It would have been an enormously tricky situation with a divorced Diana on the sidelines.