She *is* getting off easy. While it always possible charges will be changed, it is unlikely. She needs an experienced lawyer at her side to get her safely through this process given the more serious charge she could face.
There are several questions here and I would need some more facts to really answer your question. First, you should know that the crime of "public drunkenness" in PA requires that you pose a danger to yourself or someone else or that you are disturbing the peace in some way. Depending on the circumstances, your porch may or may not be considered "public."
I recommend you retain an experienced criminal attorney to represent you in this matter.
I recommend you retain an experience criminal lawyer to assist you in discovering whether there is or is not an open warrant (or other legitimate reason to detain) and, if not, file a motion to have him released.
"Fair Use" is a *defense* to copyright infringement. If you have any question whether your use of someone else's intellectual property is infringement and, if so, whether the fair use defense applies, contact an attorney to review your use.