Firstly @Sundaysiesta56 I agree with most people that this is a good choice of A levels if these are the subjects she enjoys most.
Good post tho from @BobandRobertaSmith - if she might want to pursue either maths or economics at uni, especially if aiming for a higher-rated uni, then she may want to consider FM. Also yy what is her expected maths grade? If it is 8 or 9 then fine; 7 or below then probs not the best idea to take the A level.
I think the idea that A level choices need to match is a bit misguided unless a student has a good idea of their future plan. DS2 was all about the science and his maths A level will have complemented and supported his biology (and at uni). But disparate subjects are fine as long as they will lead to good grades and don't exclude any possible higher ed choices. All A level choices must remove options - it's in the nature of the choice of three - but the question is always, are they options you want to keep? DD was never going to be a physicist with he A level choices - but that was fine by her.
If your DD might want to pursue art then the A level is a good choice, tho it is for sure a thief of time. But then presumably she has taken GCSE and enjoyed it. Same for an Eng lit degree - A level is needed. Maths A level without FM or another science is not imo a great door-opener (as in, it is not needed as such for that many degrees tbh, tho lower-ranked unis might be fine with ust maths for econ or maths degrees); but maths A level is always a good thing to have on your list and actually it might inspire her to something related such as accountancy or business or marketing research.
I have to disagree with @SpiritAdder tho here It keeps the doors open in the STE of STEM, economics, law, PPE, humanities- English & classics, international relations, business and studio arts - some of those degree choices are open with any A level combo tbh (business, int relations, PPE, law, classical civ) and IMO she will be excluding econ, science, engineering and tech degrees with her choices tbh, unless she adds FM or a second science (physics for engineering). That's all fine for sure tho - if you don't fancy physics A level you probs won't enjoy an engineering degree; if you don't love maths enough to take FM, then maths degree is probs not for you.