How did Anne Frank's parents react to her and Peters relationship?

Partially, she came to somewhat resent her father, briefly, because he was reluctant to accept her newfound spirit of independence (knowing her maturity had not caught up with her independence yet), and partially because she came - finally - to understand that while her mother truly loved her father, her father, though an Excellent husband, had never really been in love with her mother. This softened her view of her mother, which had been very hostile up to that point.