I have a love/hate relationship with the name. I personally wouldn't use it in real life, maybe in a novel. I've never met anyone named Prudence so it might be refreshing to meet a girl named Prudence. Maybe the nickname Pru will help you like it a little more if you are so inclined.
I do like Pru / Prue. Haha, I love how you describe it- love / hate relationship. I think that sums up just about how I feel about quite a few names, especially tryndee names or spellings that I feel like I really shouldn't love as much as I do. Cassidy and Tamsyn are my two best examples.