Tilly Foreshadowing S2?

On a complete rewatch and up to S2 Ep2 and Tilly is made a huge point of, from the dancing in the rain, helping clear the house, giving a drink to Donna to playing cards the morning after the bus arrives.

I don’t know if it’s over acting from the lady who plays her because she knows that the S3 plot revolves around her, direction from production to make a point of this or forecasting that she is actually the MiY all this time.

It’s just all very forced for her to be noticeable and I/we clearly haven’t got the answer yet.

It seems a bit much if it’s just to highlight her as a plot point for Fatima later

I know this has been discussed a lot about her but taking away the plot and just focussing on the acting alone, I don’t know if this was the big reveal for the rewatch?!