I'm a big fan of Galen Rupp, so I'm going to advise something similar to what he does. He trains speed year round, and has shorter intervals on Tuesdays and longer intervals on Fridays with a long run on Sundays. You can follow this format and just tweak the schedule if you want to race on the weekends like have short intervals on Monday, long run on Wednesday, race on Saturday with a tempo run afterwards. Your daughter seems to run similar mileage to me(a high school senior), so here's the same workout plan I'm on right now:
Monday- 60 easy and 5-10 minutes core AM / 30 easy and drills and 8-10 strides PM
Tuesday- shorter intervals in AM / 20 min warm up run and gym session and 10-15 minutes core in PM
Wednesday- 60 easy AM / 30 easy PM
Thursday- 60 easy and 5-10 minutes core AM / 30 easy and drills and 8-10 strides PM
Friday- longer intervals in AM / 20 min warm up and gym session and 10-15 minutes core in PM
Saturday- 1hr45 min long run(Galen Rupp only does 1hr45 min, no reason to do more, doing more just takes away from training because it takes too long to recover)
Sunday- rest day(rest days allow for recovery to avoid injury and burn out, however if you're opposed to rest days, switch Saturday and Sunday then do a 40-50 min in the morning on Saturday and take the rest of the day off)
Notes:
Long Intervals- either 6x1600m with 400m jog recoveries, or a tempo running of 6-8k(I only do 6k tempo runs, but your daughter is welcome to go up to 8k, but no more is advisable)
Short Intervals- either 12x200m with 200m jog recoveries, or 8x800m at 5k pace with 400m jog recoveries.
Warm Up/Cooldown- for workouts do 20 min warm up jog then some drills and strides to loosen up the legs, and do a 20 minute cooldown jog after the workout
Workout Paces- for 6x1600m you start at about 92% of your 5k pace(i.e. for me 5k pace 81 per 400m, so 81 divided by 0.92 gets 88) and then every so often do them gradually faster(than the previous workout) until you max out at 5k-10k pace near the training peak; for tempo runs, just run fast at an even pace between 85-92%(depending on aerobic strength) of 5k pace; for 12x200m start at 2-3 seconds(per 200m) faster than mile race pace and gradually increase them each session until in peak training you max at 1-2 seconds slower than 400m race pace; for 8x800m, its just 5k pace so think of it as a good way to learn race pace/effort
Workout Structure- alternate weeks between the workouts so 12x200m and 6x1600m one week then 8x800m and tempo the next week then repeat again; when you consistently do the same workouts it makes easy to know that you've gotten more fit and by increasing pace instead of workout volume you train your body to run faster instead of just run the same speeds for longer
Gym Sessions- go to Flotrack.org and watch Rupp's weight room workout for ideas on what should be done in the gym; the whole purpose is to develop biomechanics to prevent injury and improve speed
Yearly Structure- after the peak race, take 2 weeks off, then 2 weeks of just easy runs, then 2 weeks of moderate training, then back into the training plan for 8-10 weeks of increasing volume and intensity, then 4-5 weeks at peak volume and intensity, then 4-5 week taper, do this twice per year(its what Salazar's athletes do; most noteably Rupp and Farah). This has no base phase, because base is stupid. You don't only do speed work 3 months of the year because then you lose the speed and have to get it back from scratch. You have to do year round speed even if due to the progression of speed in workouts philosophy, that means your workouts may be on the very slow range of things early in the training build up. The 12x200m and the gym sessions are good for developing the top end speed, while the drills and strides are good for developing the running form.
Increasing Mileage- Mileage should only increase 5-10 miles per week per year, and that may just be due to getting more fit and running easy runs faster. As you get more fit, warm up and cooldown could be increased to 30 minutes for each to increase mileage, while 60 minute runs are increased to 70 minutes and 30 minute runs are increased to 40 minutes.(over the course of several years, because you need to take a long term approach to be successful at running and reach your true potential like Galen Rupp)
Easy Run Pace- This should be done by feel. If they're done too fast to be recovered enough to do good workouts, then they need to be run faster. Based off Salazar's guys, easy runs should be done at about 72-76%(depending on how the athlete feels on the given day) of 10k race pace.
I think that covers everything.