|thanks british library flickr (PD)|
On a Favourite Dog
Press gently on him, earth, and all around
Ye flowers spring up, and deck th' enamelled ground,
Breathe forth your choicest odours, and perfume
With all your fragrant sweets his little tomb.
This was likely in honor of her father's white greyhound, who died in 1714 and in whose honor a monument was raised near the family's English estate in Yorkshire. You can see that monument and read more on its history here. (Scroll to page 2.)