She roved further afield as she wriggled her toes luxuriously on the hot-water bottle. If it pleased our dear God to take her to Himself, and she was not so young as she had been—there was that plate of the four lower ones in the blue tooth-glass, for instance—He should find all her belongings fit to meet His eye. ‘Swept and garnished’ were the words that shaped themselves in her intent brain. ‘Swept and garnished for——’
This is from "Swept and Garnished" by Rudyard Kipling.
I don't understand the meaning of---
---there was that plate of the four lower ones in the blue tooth-glass,---
I am glad if someone would kindly teach me.