If you bought it here it should be in your download folder.
Try this link. It is the only one I can think of that has sunbonnets.
I'm not sure if I've ever seen a Sunbonnet and Kitten set on here. Are you sure you bought it from Cute Embroidery?
To search this site go to the EMBROIDERY DESIGNS heading at the top of the page and click on the letter of the alphabet you are looking for.
If you put this question in COMMUNITY you will get many more answers. This part of the website Q&A is not visited by many members.
I hope someone can help you. Love Chris, Newcastle, Australia.