Stella Carrington probably never expected that, by placing her hopes on her grandparents, it would turn out that for Simon Carrington, his parents' presence didn't mean as much as the master's. Therefore, after Simon had discussed his relationship with Daisy Willow over the phone with his parents, knowing that Daisy was the granddaughter-in-law favored by the master, they naturally wouldn't oppose.
Far from opposing, they even helped the couple prepare for the wedding, not minding at all that Daisy was remarrying or that she had a child, Elena, from her previous marriage.
Once they understood what Simon meant, they found some time to visit their villa to see Daisy and Elena, bringing with them a gift they had collected during an archeological excursion.