Dumeril's are generally an overall docile snake, but can get moody when they are bothered.

Like the other posts, definitely stressed. You've only had her a week so let her settle in and don't bother her for another 5 or so days. Try feeding her in another week.

Most of the time Dumeril's will get shy and refuse food once they are in a new home. My first Dumeril's was very picky, only accepted live. Took me about 5 months to switch her over to F/T.

I'm sure she will be just fine once she's settled in. As someone posted before, make sure you have substrate she can burrow in, they love to burrow.