[3] As a child, Valtonen lived with her family in Bonn, West Germany; she completed A-levels (Reifeprüfung diploma) at the Deutsche Schule Helsinki.

[13] In January 2024, 79 Finnish diplomats signed a letter to Valtonen, criticising the official response to the Israeli attacks on Gaza.

[14] Valtonen and her Nordic counterparts signed a joint letter in late October 2024 condemning Israel's planned bill that would seek to ban the UNRWA from operating in the country and in effect the Palestinian areas.

[15] Valtonen has co-authored several reports on economics and the society such as "The Future of the Euro – The alternatives for Finland" (2014) and "The Life Account – A Social Security Reform" (2013).

[7] In 2018, she published her book Vapauden voitto (Victory of Freedom, Otava), on how to reform the Nordic welfare model and the European Union.