Hmmm, I don't think she's a DT. Until you get her in full flare I say she's not a DT but just a perfect bit taken from her fins which isn't uncommon. Also she doesn't have the fins of a DT, her dorsal would be longer and she'd have more stubby rays at the top. Also her dorsal and anal would be almost exactly proportionate. Sorry.
Here's my DT girl Phoenix