I feel really strongly about this!
I think she is strong. She asserted herself on the funeral walkabout with the Sussexes, for example. But strength manifests in different ways. Quiet, apparently-shy people can be very strong- they’re just not loud or performative about it.
And she’s presumably going to be consort, not the monarch, so constitutionally she shouldn’t be too dominant. This shouldn’t be confused with suggesting that a woman should be subordinate to her husband- Prince Philip and Prince Albert before him had to watch their step as mere consorts and famously found it difficult!