"I'm no expert, but after a year, you should see some decrease in time, not a steady increase....She had plenty of time to adjust to the college coach's program and it didn't work for her."
Not to get too personal here because you seem to be pretty sensitive about this, understandably so because we're talking about your daughter, but...
I hope your daughter consulted with an expert before making her decision to quit. The expert would have probably told her to stick with it, since runners often struggle for 1-2 years before making a breakthrough. The life change of moving away from home, more challenging academics, adult life, etc. are enough to mess up your running. Add to that a new training program, new coach, new training partners, new environment, more challenging competition, getting used to never winning a race, etc. Not to mention that at that age, girls are often going through physiological changes that compromise their ability to run. It may not be as simple as a bad coach or bad program.
"...she is back to 19's with half the effort she had to put forth for her 21's in college."
Again, this isn't necessarily the fault of the coach. Runners often do quite well, at least temporarily off of minimal training. But sometimes you have to make short-term sacrifices for long term gains. Many young runners have a hard time accepting this.
Personally, I ran in a Bowerman hard/easy type program with moderate mileage in college. It was very different from my high school program. I made almost no improvement in my freshman year of college, then actually regressed to my high school times as a sophomore. It was so frustrating because I was doing everything right in training and felt like I was getting nothing for it. In my third year, after two years of hard training and sacrifice, I made a huge improvement, PRed in almost every race, and move to a level I never imagined I could reach. If I had been impatient and given up after that first year, I never would have known how good my coach was because I quit before I gave him the chance to show me. Judge a program on its long term improvement, not a year of life changes and distractions.
Incidentally, I've had experience with Paavo. I tried it after college and will never do it again. After just a few months of having to hammer every run from the time I went out the door, I absolutely dreaded running. All out at the start, then "hang on the best you can"? I must have been out of my mind.