Spec-wise, it's sounds like it should be reasonable for her purposes.
IIRC, there is a way (but someone else will have to spell out how) to take advantage of the free W10 deal, but do a total wipe and reformat of the machine and install from scratch.
If so, that's what I'd try, just before recycling it.
I wouldn't put any non-recoverable money into it.
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