Scenario 1: Had chances in the 1st set but loses 6-7 or 5-7 and collapses in the 2nd, losing it 0-6 or 1-6.
Scenario 2: She played crap 1st set, than started playing well winning the 2nd with a good score and then winning the 3rd with a tighter score.
Scenario 3: She plays okay and wins the 1st set relatively easily, than has a completely lapse and loses the 2nd with a big score and than toughs it out in the 3rd.
Scenario 4: Wins set 1 and than collapses until the end.
Scenario 1: 50% of the time
Scenario 2: 30% of the time
Scenario 3: 15% of the time
Scenario 4: 5% of the time
Something like this?