From Wikipedia:
In an interview on ITV's South Bank Show aired on 24 June 2007, Faithfull herself said that the story she intended to put across was that Lucy climbs to the roof top but gets taken away by "the man who reached and offered her his hand" in an ambulance ("long white car") to a mental hospital, and that the final lines: "At the age of thirty-seven she knew she'd found forever / As she rode along through Paris with the warm wind in her hair ..." are actually in her imagination at the hospital.
Well... WHY she climbed the roof is still unclear. Maybe because of the laughter because she ran naked trough the streets, maybe because she wanted to commit suicide...
From Wikipedia: In an interview on ITV's South Bank Show aired on 24 June 2007, Faithfull herself said that the story she intended to put across was that Lucy climbs to the roof top but gets taken away by "the man who reached and offered her his hand" in an ambulance ("long white car") to a mental hospital, and that the final lines: "At the age of thirty-seven she knew she'd found forever / As she rode along through Paris with the warm wind in her hair ..." are actually in her imagination at the hospital.
Well... WHY she climbed the roof is still unclear. Maybe because of the laughter because she ran naked trough the streets, maybe because she wanted to commit suicide...