She has to cut her losses now. Right now. Or....
Everyone has 'anecdata', here's mine:
DS1, academically 'OK', but lazy (I don't distinguish. If they're 'rilly bright', but 'layzee'- they've still failed to get adequate marks.). To be fair, he got AABBBBBBCC. But 2 Bs were in his A level choices, Maths and Physics. Third was the Geog, an A.
Sixth form did the commendable 'we really value effort' thing. 'Best' sixth form option (okay, Peter Symonds, Winch) would (correctly) not allow a B grade onto their Maths A level. His chosen sixth form- did.
He 'soldiered' on from Sept-Dec; all suggestions that he was struggling met with an eye roll, Maths turned to (soft)'Use of Maths'-then, parents evening, Feb, we were summoned. By this stage, he, and I- knew it was all over. 3 very low grade A levels aren't worth the paper they're written on. But I think the shock to him was that his tutors werent that bothered. So used, was he, to the ra ra squad of teachers urging him on, to have teachers saying 'you're failing, sunshine'- came as a surprise to him.
However, in the interim, I had forensically researched BTECs. To the extent I forced him to learn to drive as the closest appropriate college was a 25 mile drive away! 😊 He, during that (abortive - yet, not) year had mentioned 'Computing'.
But, for the OP, the biggie- I worked with a young, degree qualified radiographer who told me he'd screwed up his ASs, transferred to Applied Science BTEC (3A level equiv) thence into uni to do radiography. Which is where I learned about these 'A level' BTECs.
Luckily, our closest tech suddenly offered this 3 A level equivalent BTEC in computing, literally last minute. But by the time DS was applying, Feb-ish, he knew it was all over for him and A levels.
It wasn't a total epiphany- we had midnight deadline sessions with him and DH sniping at each other- but he achieved D star D star D in this computing BTEC and is now heading into Y2, software engineering, looking at a 1:1.
25% of uni entry is with BTEC. Okay, we're not talking Oxbridge, or even that many RG. But there are solid degrees to be had.
As for the 'not wasted' lower sixth. DS achieved a D in Economics AS, E in Geog. And a year's maturity. And a recognition A levels weren't for him.
And a first year 'cruisin' at uni as the BTEC had already covered much of the ground in computing...🙄😊