You are lucky your DGS will stay in it. I had a twin sized play pen for my daughter for times I needed her to not be hanging off my legs. (Cooking, running upstairs to get something I needed- why am I even explaining? It's the 'supposed to' thing- boy I would be annoyed at that comment!!)
She cried every time I put her in it- even though it was full of her favourite toys. I ended up climbing in with her sometimes, which made me look and feel a fool!
It became a much appreciated gift for someone else. You enjoy yours!