Three pink thistle flowers around a page. This vintage flower image that looks much like today’s clip art flowers might be the solution for someone looking for pink flower images.
You can leave the original poem in place but I think there are plenty of more effective ways to put these pink flowers on display.
Ida Waugh (d.1919) was the illustrator for this and a lot of other drawings from Tangles & Curls, or, Little Boys and Little Girls which was published around 1888.
This image is copyright free and in the public domain anywhere that extends copyrights 70 years after death or at least 120 years after publication when the original illustrator is unknown.