From my own experiences with WSO her timings for short term predictions are more accurate than those for the longer terms, the future is not set in stone, a lot of factors can delay the outcome...
I am not sure my stance on the concept of delayed outcomes, but for me personally, her short and long term predictions haven't manifested. They have been pushed out from days to weeks to months, and so far haven't manifested. I feel that it's just a matter of how well a reader connects with an individual, she may not work for some (not for me I'm afraid), but has worked for others in this thread. I also feel like some things are set in stone and meant to play out a certain way in each of our lives, I don't feel these things are affected by everyday decisions and other nuances.