To earn MACH2, your dog has to accumulate 40 Double Qualifiers (running clean in the Standard and Jumpers classes in the same day) and 1,500 points for seconds under standard course time (Seven had 2,552 points).
On Thursday, Seven knocked out Double Q #39 easily making Double Q #40 over the next 3 days appear achievable. Well, she did it the very next day. Here are those videos.
So 7 clean runs out of 8 attempts. MACH2. Definitely an amazing weekend for us!