My opinion... Option #1
The rider is not experienced, so a school master horse who knows his job fully, is known to be trustworthy, a good babysitter and teacher and very tolerant, not taking advantage of ignorance is where she needs to go.
She has the opportunity of owning a horse she can truly learn from.
Schoolmasters know their job and teach riders how to ask, how to do and how to do it safely, right and correctly.
If she herself is not strong in fundamentals then taking on a baby who has no handling...with that little a training on the youngster you would be looking at 4 - 6 months of training for her to have a safe ride.
The youngster doesn't know how to lead...seriously!
Doesn't know anything and a beginner rider is of the opinion she will train it...she will ruin it and very possibly she will get seriously hurt in the process.
With so little training thinking this is also a very young horse, one not old enough to be ridden.
So what is your friend thinking she is going to do for the next year, two or three while baby grows and matures wanting to ride?
What is she going to expand her own knowledge on in lessons when she has no horse to practice on what she is taught...
Best horse of her current options is the first one..my opinion.
Ride-able, sound, knows his stuff, will teach her and not kill her in her ignorance we all went through learning to be horsemen/women.
Schoolmasters can cost a bit of money, but what she will learn by the horse training her
will be a savings compared to having to send either of the others out to a good trainer for months, many
months and then her being taught by said trainer how to ride her horse...for many more months.
What you describe as the other horses I would safely venture to guess she will be spending thousands of dollars more just for the horses training to be finished and safe a ride for her.
She will have a riding horse from day one of ownership with horse #1, where with either of the others she will be paying months worth of training board to make a safe mount and still she will not
know much more than she does now.
With both "greenies" are unknown how their brains are going to develop in attitude toward work and the atmosphere she wants to ride in....
Pay now or pay later x tenfold is what it sounds like...
Horse #1 would be my push for her to get.