I have following scenario in my tree:
Brother of my great-grandmother married to her cousin, who is my second great aunt.
when I go to her page it correctly specifies that she is second great aunt.
However in relationship path it shows path through marriage.
Me->my mother->her mother->her mother->her brother ->his wife
More appropriate would be to show blood relationship:
Me->my mother->her mother->her mother->her father->his sister->her daughter
This line is longer, however it illustrates blood relationship, rather then relationship through marriage.