Following her PhD, Jeanne Henriette Louis became interested in peace movements and especially the Religious Society of Friends (Quakers), the Quakers of Nantucket, the neutrality of Acadia during the Franco-British wars, as well as the founding of Pennsylvania by William Penn.
Active in the Religious Society of Friends (Quakers) in France[REF],[REF] it is among others a member of the sponsoring committee of the French Coalition for the Decade (2010) [REF].