We get parent backstory this chapter. So, it seems like Miko inherited her abilities from her dad and that this spirit that has been tailing her actually started tailing her mom. Not sure yet how this amulet is going to play a role.
If you were to make a bet, do you think this stalker ghost is harmful or harmless?
I鈥檓 guessing
my guess
the latter, because it has brought them any harm despite stalking them all this while. Also, the manga has shown us that most of the spirits are harmless if you just ignore them.
One thing I don鈥檛 get is: now that dad is a spirit himself, why didn鈥檛 he confront the stalker?
Or perhaps he already did, but this part of the plot just hasn鈥檛 been revealed to us? If that鈥檚 the case,
another guess
maybe this stalker is their guardian angel and is in fact protecting them.