。
She had a lot of luggage.
Literal
She [topic-は] luggage [object-を] a-lot was-holding.
持っていた uses ~ていた for a past state — she was in possession of a lot of luggage at the time being described. Without the directional auxiliaries 行く or 来る, plain 持っている/持っていた simply describes having or holding something. Compare: 持っていく (take away), 持ってくる (bring here), 持っている (have/hold in place).