。
She doesn't show up on time.
Literal
She [topic-は] time according-to does-not-come.
~どおり (or ~通り, 'in accordance with, as per') is a productive suffix that turns a noun into 'just like X / according to X.' 時間どおり ('on time, on schedule'), 予定どおり ('as planned'), 想像どおり ('as imagined'), 言ったとおり ('just as I said'). The kana spelling どおり is more common in everyday writing; 通り is the kanji form. The plain negative こない (= 来ない) keeps the register casual.