Jesus's appearing to Mary is multiply attesed and in all cases where we read of this, it is clear that Jesus appears to her and her group before anyone else (e.g. before the male apostles).
• Mary and her opinion on issues everpresent to the Jerusalem church.
• Mary is listed in all gospels.
Both the Gospel of Matthew (chapter 28) and the Gospel of John (chapter 20) reprort on Jesus's appearing to Mary, and they do so without one having borrowed from the other.
• They are strikingly/uncoincidentally similar.
But no, Plausibly…
• Jn 20 simply sprung from Mt 28.
Mary Magdalene was herself testifying that Jesus appeared to her alive from the dead. This is factors into the discussion because if Mary was herself saying this then in all likely the Jerusalem church--which she was a part off--was also saying it.
• Traditional witnesses were saying “Jesus appeared to me/us”.
Jesus’s alleged appearance to Mary absent in sources that would’ve mentioned it (if the 1st church knew of it).
• 1 Cor 15 list would’ve included Mary.
• Mk 16 would’ve recorded the visit to Mary.
• Lk 24 would’ve recorded the visit to Mary.