Consequently, Mary Magdalene and the other woman are the first to see the risen Christ in Matthew. This is definitely the most important difference with Mark, one which gives Mary Magdalene a new significance and an extra dimension: She is the first to whom the risen Christ appears.

Ref:

Bieringer, R., & Vanden Hove, I. (2007). Mary Magdalene in the four gospels. Louvain Studies, 32(3), 186-254.