。。
She hasn't come here yet. I think she might've gotten lost.
Literal
She [topic-は] yet here [at-に] not-coming. Road [at-に] got-lost might [quotative-と] think.
道に迷う ('lose one's way,' literally 'get lost on the road') is a fixed collocation — the verb 迷う on its own means 'to be at a loss / hesitate,' but with 道に specifies geographic disorientation. Layering ~かも知れない ('might') with と思う ('I think') doubles up the hedging: the speaker isn't asserting it, just floating it as a thought. This kind of stacked tentativeness is very Japanese — it softens the claim and keeps the speaker non-committal.