Mary Magdalene was among “the women” praying in the Acts 1:14 church. After all…
• …Contextually, she was just mentioned.1
This is relevant because “the women” were members of the Jerusalem church. (It reads, Acts 1:14 -- [Jerusalem church members] all with one mind were continually devoting themselves to prayer, along with the women.)
Mary Magdalene was carefully protected by the Markan community (behind Mark’s gospel). After all… • …they deliberately anonymized her name from a story that would have incriminated her. (See Mk 14:3-9) This is relevant because the Markan community was ultimately the Jerusalem church (Peter's church).
Mary Magdalene lived with Jesus and the apostles (as if her new family).
• …Luke 8:2-3 says she abandoned her old life to support them.1
This is relevant because the apostles lived with and headed the Jerusalem church now.
Mary Magdalene was especially prominent/influential in Christianity.
• …Celsus’ criticized her as a foundational member of the church1
This is relevant because the Jerusalem church was the fountainhead of early Christian influence. (It is part of what made her testimony and views so accessible.)