I think that when she gets closer to the time of thinking about degrees, to be aware of the figures,! as others have said, there are far more graduates with law degrees than there are chances to actually be a lawyer.
It is still possible to invest a lot of time, and money in training and still not get where you need to be.
In my immediate family we have lawyers- the barrister did a non law first degree, then did graduate dip in law and the bvc - bar vocational course as it was then, masses of effort, masses of money. Then less than 10% managed to get pupillage... The final bit you need to qualify as as a barrister.
Looking at the current fees- the two courses' fees alone total between 20-30 k( depending on location), PLUS living expenses for 2 years.... So an absolute minimum of 40k to get to a stage where you still may not be sucessful (as a barrister at least). This will be on top of any undergraduate loans...
However, as with all these professions, every year many, many people are sucessful..... Think it's important that your daughter makes herself aware of the competition when she looks at her future.
All the sucessful barristers and solicitors I know, their common traits are high levels of all round ability, a very sharp mind, and ability to work long hours as needed! One of our family's barrister who qualified a decade ago is still regularly preparing cases through the night!