I don't for sure Roch but Ann Eaton twigged Jeremy's cat and mouse antics after the Osea Road robbery,there was the incident where he sprayed a neighbour's field with chemicals,the unexpected birthday card,the offer of sunbed,the hint that they would both be working together in the not so distant future as joint owners of the caravan park..
They were already working at the caravan park together. The relatives had no affection for Jeremy which is evident because even acts of kindess were met with their suspicions - a birthdays card, an offer of use of his sunbed, the flowers he sent Ann. Yep, they all point to the acts of a cunning killer

. The chemical incident was an ACCIDENT!!