This is in Scotland, so for National 5 (Scottish equivalent of GSCE). Only get to do 8 subjects though, which is making choosing hard. Other subjects - English, Maths, Physics, German, Latin, Geography, RMPS (Religious, Moral and Philosophical Studies).
DD is leaning towards Drama, I want her to do Chemistry.
My reasons - it will make a better balance of subjects. Only doing one science is not great (she is very bright and it may look as though she's not). She doesn't do any extra-curricular drama, so she can't be that keen (she did audition for one school play and failed). Chemistry is a basis for other things. The drama course, as far as I can tell, isn't.
Her reasons - she thinks she prefers drama, and won't want to do Chemistry at higher levels anyway.
Now, I think my reasons are better than hers 
, and I'm looking at it from the perspective of her future studies and employability rather than a 13 year old who just wants to pick subjects she enjoys. But, should I even try to influence her? If she does Chemistry and hates it, it will be all my fault what's new? Should I just let her make her own mistakes? (If indeed it is a mistake?)