I'm just going to focus on what you are going to teach your child with this. Any legal issues or discussions about if piracy is wrong are for another time and place.
Whether you should stop now or later or ever depends on what you want to teach your daughter. Eventually she will pick up on it. The longer you keep doing it, the easier it will be for her to see all the things you've pirated and ask you about it. Then you either have to teach her that it is wrong and you should stop or it is wrong but its okay to do it anyway.
If you want to teach her that it is wrong and should be stopped, you need to obviously stop and then get rid of everything you have pirated. If you do, you show that wrong is wrong. It also shows that it isn't acceptable no matter how much you want something. If you don't, you send the opposite message, one that it is okay to benefit from wrongdoing or that it's okay because "reasons". It's kind of like slugging your brother (hard and very on-purpose) then giving an insincere "sorry" because it was "wrong".
If you feel it is okay to teach her that it is wrong but it is okay to do anyway, go on pirating. This will bring up conversations about what makes it okay to do wrong things despite the fact that they are wrong. This can get potentially messy trying to teach your daughter what justifications ("lots of other people do it", "I really, really wanted to", etc.) are acceptable and when they apply and when they don't. I would also not ever be surprised if she does something you find totally unacceptable but then argues that it is okay because of justifications A, B and C. She will probably also throw the piracy thing back in your face with a "well how come you can pirate all those things and it's okay, but I can't do X?".
Personally, I would say stop now and get rid of all the pirated stuff you own. It will make it far easier to show her that wrong is wrong and right is right. When your words say one thing and your actions say another, you get moral ambiguity. You end up with a lot more gray areas which lead to a weaker moral compass. (Not saying there won't be some gray areas anyway, you just end up with less clear cut things and more places where you can talk yourself into being okay with any choice.)