Thankfully, she composed in an romantic idiom and unlike many 20th century composers, never bothered with all that 12 tone serialist plinky plonky crap.
Why "thankfully"? All that one has a right to expect of any composer is that he/she writes in ways that best represent his/her thoughts. 12-note serialism may largely have had its day but it also had its raison d'être; early immersion in it helped me to think more clearly about melodic contouring, to develop my thoughts about the rôle of repetition and such like, even though I've never used any aspect of that system of working when actually writing music (other, of course, than as part of my early studies) and, although I've incorporated several 12-note themes in some of my works, I've never treated them serially. There's been fine music and some far from fine music written within the 12 note serial system - and it's probably worth remembering that the reputation of Schönberg himself would still be immense even had he not gone down that path. As to "plinky plonky", I've said before that, since it's neither a technical term nor one that carries any specific connotation that can credibly be applied to particular musical works, it's best avoided when trying to make a meaningful statement.
One aspect of the fallout from the sheer diversity of styles around today is that of young composers starting out and wondering how they should write or in what manner they might be expected to write; my advice (when I've been asked for it - which isn't as often as in other cases, as I do not teach) is always "write like Xenakis - in other words, instead of trying to write like anyone else or writing what you think others might expect of you, just be yourself and be honest in the way that you write; if you're not prepared to do that, it's probably best not to write at all".
OK, sorry for the digression - but it seems to be worth pointing out that whether a piece is any good and whether it's genuinely representative of its composer are more important aspects of it than what kind of style it happens to be in.
Best,
Alistair