How do I make a straight skeleton with qtree?

Question

I have the following tree:

\documentclass{article}
\usepackage{qtree}

\begin{document}

\Tree [.A [.a ] [.B [.A ] [.a ] ] ]


\end{document}

and I would like the A -> B -> A skeleton to be a straight line (meaning, the angle between the branches should be different, so that A -> B -> A goes straight down).

Also, I would like to have a dashed curvy line connecting between the two "a"s. Are those two things possible?

(I don't mind using tikz-qtree instead if needed.)

Answer 1

Do you want something like this?

I did this with Forest because it makes it easy. Perhaps tikz-qtree offers something similar, but Forest is generally more capable in this regard.

\documentclass[border=10pt]{standalone}
\usepackage[linguistics]{forest}
\begin{document}
\Forest{[A[a][B, calign with current [A, calign with current][a]]]}
\end{document}