What could this tell me..us?

Okay, so my older sister got a little interested in past lives, and who she was. I thought I'd help her out, since I'm quite interested, myself. She has a quite interesting placement of Saturn and Mercury in Eighth house, I mean eighth rules birth and death! Saturn is quite heavy, a little harsh maybe.

Another thing is North Node In Twelfth House and South in Sixth...What could that mean?