Piper has been through a lot of struggles and I’m proud of the character she had become. At first, being the middle sister she did not want to get in between Prue and Phoebe and their arguments. After Prue died, Piper tried to fill Prue’s heavy shoes and see the world in her perspective. Her new explosion power (a couple episodes before Prue died) was to compensate for Prue’s death, plus its an advancement from her freezing power. Being a mom, club owner, Charmed one and battling demons in the many attacks which can involve a temporal death has put major pressure. Breaking the rules by marrying Leo showed that she did not care about the Elders and what they thought was ethical. She deserved to be happy and she was the heart of the family who put them all together and mediate. Even though for most of the show, Piper was the oldest sister she would still but in arguments that Phoebe and Paige would start because she always knew what was best for the family, just like Prue. Piper being the middle sister also did not give her much of a say or an opinion because Prue would overrule it. Piper as the oldest made things her way as she looked Prue as her role model and copied similar traits from her older sister.