Very similiar to McLeod's Daughters (Australia TV Series)
This show is on Tv tonight in Australia. Haven't seen it yet, but sounds similar to McLeod's Daughters:
http://www.imdb.com/title/tt0292414/
Earlier TV Movie of McLeod's Daughters:
http://www.imdb.com/title/tt0112068/
"Following the death of Jack McLeod, his two daughters, Tess and Claire (who are half sisters and do not get along with each other) inherit his cattle station in the Outback of South Australia. Both have different plans of what to do with the cattle station.
There have been 7 seasons of McLeod's in Australia, with the final season showing 2008.
I'm interested to watch Montana Sky tonight, to give my own review on it. So far, reviews haven't been overwhelming :(