Hello,
Thank you for your query at DoctorSpring.com
Ovarian cancer does not cause recurrent UTI. Your daughter is 24 years and anyway her likelihood of having ovarian cancer is very minimal.
Ultrasound usually picks up any ovarian abnormalities if present.
You should stop worrying and no further tests are required for your daughter.
Feel free to discuss further,
Take care
Sincerely
Rajiv Goel