Of course.
According to her, she didn't want her precious daughter to be involved in the entertainment industry, let alone become a female celebrity.
When Gary White decided to study directing, Madam White and Sir White disapproved, believing that he was not serious about his career.
However, Gary White was a very strong-willed person, and once he made up his mind to do something, no one could change it, so even though Madam White and Sir White disapproved, he still ended up doing what he loved.
As for Joanna...
They had just recognized her as their daughter.
Even though Madam White and Sir White did not approve of her becoming an entertainer, they would not stop her since she was a daughter they had just recognized.
Moreover...
With their son-in-law not objecting, they had even less reason to say anything.
Luckily, with the power of the White and Heath families, they could protect their precious daughter well, not letting her be polluted by the chaotic industry.
