Well and so your question about Erika should be answered for good. @Red Haired Shanks
Not really surprised about the reveal, more that Yoko actually killed Erika. It was kind of hinted Erika was stronger/more skilled by Tzyk so I thought back then she was still alive when Yoko went on her mission. Plus the current fight is so onesided. I actually wonder if that one panel with wasted Yoko is a false memory of Erika then.