Is Pihu the Real Arpita or a 'Re-Born' version?

Hey guyss 😊,
We're all in suspense here... Who is Pihu(/Sonam)?
And what connection does she have to Arpita if any?

See I think in today's episode where the ghost version of Arpi talked to Avdesh, she hinted at the whole 'reborn' theme... She said she'll lice Avdesh in every janam.
So yeah, that's my view 😉.
But then again the article hinted at it being Arpita who wanted revenge? Though she doesn't seem the type, and the abrupt change in personality is questioning?
That's why I thought maybe it IS the real Arpita, just with memory loss.

I REALLY, REALLY hope so, else it will just be such an insult to Arpi's well developed and beautiful character 🥱
What do you guys reckon?