Why did my baby Rosy regurge her last meal?

I am probably worrying to much, but my baby Rosy Boa regurgitate her last meal. I fed her a slightly larger pinkie ASFs, but not by much, on Tuesday. Her meal before that was 4 days earlier. I normally wait 5 days between feedings, but she had been actively out and about in her tank for 2 days so I fed her 1 night early. Would this have caused her to regurgitate the pinkie? Here is a picture of her setup, its pretty basic.

http://i108.photobucket.com/albums/n...4/IMG_4932.jpg

She is on Aspen bedding, with the heat lamp and an under the tank heat mat on a thermostat over one hide. Here hide on the warm side sits between 85 and 87 degrees according to the thermoter in the hide. She has a small cup of water in the tank at all times on the cold side of the tank. Is it something wrong with the setup? Or did feeding 1 day early cause it, or the slightly larger Pinkie. Thanks for any help. I know I am more than likely worrying to much, but I love my baby Rosy Boa, I want her to be healthy and happy.

I would venture to guess that it was the early feeding.

Yea maybe she didnt fully digest the other meal yet so it was too much for her. Also are you sure the f/t was fully thawed all the way through? It was just a pinkie so it probably was but if it wasnt that could be a cause for it too. Wait 3-4 weeks before attempting to feed her again.