As someone with ADHD myself, I instantly recognized the inability to get myself to start working on something until the last minute (even if I really, really want to do it) and the piles clothes (despite my propensity for cleanliness). Another hallmark of ADHD that many don't know about is bursts of almost manic productivity for random tasks or when under extreme pressure.
If she does have ADHD, Polly's answer is both unhelpful and somewhat dangerous.