A Beginning and an End

I have the opening and the concluding paragraphs of a story, but have yet to work out the middle!

Beginning:-

Until I inherited my parents' house and its contents, I had no idea that I had had a great-aunt Mildred. I wondered why her name had never been mentioned, and if it was her face that had been so savagely mutilated in the family photograph albums.
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Conclusion:-

Some careful research in the local parish records enabled us to locate Mildred's grave,in a remote corner of the churchyard. It was marked by a plain slab that had become covered in ivy. When we cleared this away, we discovered a huge frog lurking underneath. I was relieved that it wasn't a toad.