As far as I can see, if Eike is reasonably happy as she is then magic dampeners are the best solution for the time being.
As far as I know the college takes apprentices of any age. So as long as Eike can be trusted to not experiment, there is no reason that she cannot come to the Colleges later in life.
Now if she has a strong preference for magic or can't be trusted not to experiment, then a college or the priesthood might be better. Note she was strongly associating things with various religious rites.
Edit: So far I'm not sure she's set out for Grey Wizarding. Wilhelmina has been teaching her to be honest (if sharp) in her business dealings, so she might struggle with the twisty nature of the college. It is also likely to cause her issues with the vow of poverty even if they can sort of be gotten around.
As far as I know the college takes apprentices of any age. So as long as Eike can be trusted to not experiment, there is no reason that she cannot come to the Colleges later in life.
Now if she has a strong preference for magic or can't be trusted not to experiment, then a college or the priesthood might be better. Note she was strongly associating things with various religious rites.
Edit: So far I'm not sure she's set out for Grey Wizarding. Wilhelmina has been teaching her to be honest (if sharp) in her business dealings, so she might struggle with the twisty nature of the college. It is also likely to cause her issues with the vow of poverty even if they can sort of be gotten around.
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