Free Will and Theodicy

Edit: I've deleted my original post because it had some fundamental errors in it and I don't want those errors influencing anyone else who is in a similarly ignorant frame of mind. The argument I made about Mary being unable to do evil is laughably bad and ignorant of what the Immaculate Conception actually was, she most certainly could have sinned if she wanted to, but she didn't. So my entire argument was based on an incorrect premise. In the Catholic understanding God clearly does highly value our choice between good and evil, and this applies to Mary as well, she is no exception. I would also say that while it is true that a being could still have free will/free choice and yet not have the desire to do evil, nevertheless God did desire that it was important that we have a genuine choice between good and evil. If God loves each of us and wants each of us to be saved, I suppose he also wants to give each of us this choice in the full course of our lives, and if we freely choose evil then we will suffer the consequences. Does it in any sense limit or reduce God's love for to say that God is willing to let us fall into damnation? I still have some difficulty reconciling this, but I am now much more willing to accept it, especially since I have realised how flawed my original understanding was.