It makes me happy to see her happy.
Now here is my tutorial in case you want to make your little one happy.
First start by tracing your little one's body shape and don't forget to give it a a little extra room to wiggle. I also made the tail shape out of paper and then cut it out of fleece. I had a blanket kit that we got at either Walmart or Joanns for really cheap.
You need two of each piece to have your front and back. Once you cut the fins, with right sides together you need to sew around the fin but leave an opening of about 6 inches to turn it inside out later.
Just insert the tube with right sides together.
Now go on and enjoy making one for your little mermaid in your life. You could also make one for boys but instead of a mermaid tail you could do a shark or fish with teeth at the waist to make it look like it ate your kid.
PS, excuse the cellphone pics, I am having to go without Photoshop for now and can't edit my nice pics at all.