I thought I might have one last try at finding "mysterious" Hilda.
Hilda Wilkinson was born in Chorlton-cum-hardy, Manchester in Q4 1900 to Henry Wilkinson and Alice Brookes. Post 1911, she seems to have ended up in service at a house in Liverpool following which she emigrated to Canada in 1926. In Montreal, she married Henry Roberts (who came from Birkenhead) on July 1928, as Hilda Patricia Wilkinson. They returned to the UK in 1930 and lived with Henry's mother in Birkenhead. Around 1938, they took up residence at 31 Moorfield Drive, Parkgate, Neston where they stayed until Henry died in September 1945. She buried Henry in an unmarked grave at Neston cemetery.
This is where it gets interesting! In December, Hilda took on a lodger. Two weeks later, the lodger went out drinking with a male friend who murdered her on the way home. The following year, Hilda moved out of the house and I can find no further trace of her.
As you might gather, I've worked hard to find the information I have outlined. Her "husband" Henry was my bigamous grandfather and finding out what happened to Hilda would finally put the story to bed. I should say that I don't think that Hilda or Henry's family had any idea that he had been married previously.
Please ask if I can fill in any more detail. Meanwhile, over to the sleuths!