It is VERY difficult to walk onto a good sports program in the USA. If she wants to play soccer here, she'll have to get recruited by a school like Chapel Hill or Notre Dame, as Alias mentioned. The top programs in the country go out into high schools and do a lot of scouting and recruiting.
If she wants to play professionally, she needs to be in the very top of the elite players in high school, and has to have a recruitment agreement with a university to ensure she gets to play. Otherwise she risks not being able to get into a top team (the most likely scenario) or, if she DOES manage to walk-on, she won't get any playing time because the other girls will be recruits.
With how competitive college sports are in the USA, I'd recommend she go to a school where she can play soccer AND
get a degree she's interested in. If she ends up at a lesser Division II
or III school that has a strong academic program, she may be able to have a good varsity soccer career there and finish school with a productive degree. If she does well in the soccer program she may get noticed and scouted for pro teams, but, on the chance she does not, she will be able to enter the real world knowing she worked hard, got a good degree, played 4 years of competitive soccer, and ended up a well-rounded adult.
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