Plant identification - help

[Catanddogmake6]

Anybody able to help me with identifying this plant with pink flowers? DM has some spares she is donating to a plant stall but neither of us can think of the name. Many thanks in advance ...

It might be hemp agrimony - which is a v tall wild flower that likes damp places, and very well loved by insects (like that butterfly??)
www.bbc.co.uk/gardening/plants/plant_finder/plant_pages/1283.shtml

The leaves do look a bit like -- er - hemp

The leaves look similar to a tree peony, but the flowers don't. Could it be some kind of hybrid?

Bingo! Eupatorium or hemp agrimony. Thank you. That was so much quicker than trawling though my garden books which is what I had been doing.