Just curious if she offers some different dialogue or novelty. I was almost done with Dragonborn (& for the second time...the first time, i missed some big time cues/hints and got to the end in a really bizarre way...I can't even explain it, so I just started from an old save) with Skuli and Erith, who were driving me absolutely nuts (I kid you not: 3-4x in a row, I'm greeted by Skuli asking if I got his fat ass a present...he got a Skeever the first time I came back, then it was all "get me some crap so I can become even more fat and creepy looking! tee hee hee!"), and figured why not go through it even more efficiently than before and see what adopting Aeta is like?

Im not sure you can adopt her.
Id have to Kill her parents and see if she is shipped off to Honorhall...

http://www.uesp.net/wiki/Dragonborn:Aeta Read that.
Her class is Dremora?
O.o