Now this is heading off the forum topic, but:
Gym is not that far off! PCOS reacts great to lifting and proper cardio workouts. It is great to balance it with yoga, qi qong, tai chi or other similar, which is more meditative, as PCOS also (depending of type of PCOS and of person) has the tendency of progressing anxiety and depression with years. At 18, I had no such issues, and I'm an extermely positive person in general and with each year, I started to progress some mental disturbances such as anxiety and depression waves. I treat those with qi qong and acupuncture. Actually, this is the thing - to look into the bigger picture. PCOS is so complex and reacts to chemicals in food, cosmetics and environment, to stress factors, to dietary matters.. I say in no way I'd wish anyone to have PCOS, but I have to say, without it I would probably be half the healthy person I am today.
It's also great that her weight is not in the overweight range and her BMI in the healthy 25-26 level still. She should really stick to that and find her dietary and physical work out balance. If she is up for it, direct her towards such sites like pcosdietsupport or similar, where she can read about different perspectives and solutions and lifestyle management and find peers from around the world with this syndrome. I found it extremely hard for me to talk about these matters until later in my life, even that I consider my mother my best friend and we have a very open relationship. I simply felt I only wanted to talk about this with people whom had the same issue. And thanks to those contacts from around the world via forums, we shared good and bad times, shared great tips and supported when needed. If You are located in US, very likely You'll also have a support group around Your city / state. This is the great thing about US, that PCOS has awareness groups and support groups for that there. Again, in my part of the world unfortunately that is not very common.
Btw, has she been tested for insulin resistance + glucose intolerance? If she has any darker skin patches (most common: neck, between breasts, armpits) - this is a definite sign of such, as the excess insulin gathers there.. That is managed by tossing any whites from diet and replacing with wholegrain foods (wholegrain wheat, wholegrain pasta, wholegrain oats, palm coconut sugar or agave or stevia etc). Also many PCOS-ers have a rather low tolerance to gluten and lactose and are D-vitamin deficient. But probably all of this You've managed to read up already. I'll shut up now with my tips and tops;)
Instead, few pics.
These were my legs when I was shaving them. Four weeks after a shave:http://3.bp.blogspot.com/-ToKUvt9fxzc/VMASakvV4TI/AAAAAAAAIp0/Wqi2BrJez4A/s1600/oldhairy.jpg
These were my legs when I stopped shaving and started going to professional wax-lady. Four weeks after depilation: http://3.bp.blogspot.com/-MHZ1H9ty1qE/VMAQlOTC8FI/AAAAAAAAIps/lZEtQXX3_rU/s1600/FullSizeRender-1.jpg
Nowadays, its even less, but can't provide a pic, as I just had my legs waxed few days ago;) I could have my legs waxed only every 5-6 weeks only though and the hair has become extremely thin and light. No ingrowns usually thanks to tons of exfoliating and treating skin with almond oil.
And this is ... a picture of my beard... Oeh. I mean.. I of course always had it shaved, but that time I was very sick home. That was also many kilograms back;) http://4.bp.blogspot.com/-Sp-tyGQ4mCI/VMAlbxehAfI/AAAAAAAAIqE/AWScjK4x6-Q/s1600/picture.jpg
At 18, I needed to shave every now and then, at 27 this was how it looked. Add more hair on cheeks and moustache.
Now I had my first session of electrolysis (thermolysis, hope that's the right term and spelling in English..) of 4 hours and continuing next week with 10 more hours to get first full clearance, and to be continued with revisits probably for the next many many months.
Hope You keep us posted about progress with Your daughter, too!