She retweeted Tammy Bruce's support of the repeal. That to me seems like an endorsement to me. You'll have to ask her to clarify her position.
Um, no she didn't. She "retweeted" a comment to the effect of "there are a lot of hypocrites out there" that in and of itself, had nothing to do with DADT.*
In "PDS world", this is en endorsement of a DADT. Just like a statement saying something to the effect of "we shouldn't be afraid to listen to (and debate against) views that we don't agree with" is "defending/endorsing GOProud".
To normal people who don't try to shoehorn everything into a preconceived narrative, neither means what some are claiming they mean.