。
She is a very interesting person.
Literal
She [topic-は] very interesting person is.
面白い is famously dual-purpose: it can mean either 'interesting' (engaging, thought-provoking) or 'funny' (amusing, makes you laugh) depending on context. About a person it usually leans toward 'fun to be around / amusing' rather than the dry 'intellectually interesting.' The connector-less attribution of an i-adjective to a noun (面白い人) is the canonical noun-modifier shape — no な, no の, just the bare adjective.