I found Erika Kirk to be exceptional in the way she was able to speak and carry herself in the midst of such grief.
Whether you agree with her, or Charlie for that matter, regarding their theology or world view, if you watched enough of his videos you would see he always pointed to Christ when given the opportunity.
Erika gave a wonderful testimony of Christ before that crowd and all the watching world. She also gave great advice to Christian husbands, wives, and pastors, imo.
And to stand there before the watching world and forgive the one who took Charlies life is a great example for all and was something incredible to watch. I have no doubt the Holy Spirit is giving her the strength and courage she needs to speak in such a way and offer that forgiveness.