She began her career in financial services and became a licensed commodity broker in 1979, working for Merrill Lynch, Dean Witter and E.F. Hutton.

Despite her having custody of her children, Alexander and Constantin, her German ex-husband refused to return them to London after a summer holiday visit in 1994.

During her time in Washington D.C., Meyer co-chaired with Ernie Allen two international conferences on improving the effectiveness of the Hague Convention on the Civil Aspects of International Child Abduction[6] and gave evidence to committees of the United States House of Representatives and the US Senate[7] which led to several concurrent resolutions urging better compliance by certain signatory states, including Germany,[8] with the Hague Convention 1996; and persuaded both Presidents Clinton and Bush to raise with the German Chancellor cases of parental child abduction to Germany, including her own.

[9] She has also taken her campaign against international parental child abduction to Europe, giving evidence before the Belgian Senate;[10] successfully lobbying the EU to tighten its rules against parental child abduction;[11] and, together with ICMEC, persuading the Permanent Bureau of the Hague Convention to produce a good practice guide to the implementation of the Convention.

[12] In the UK, Meyer instigated adjournment debates in the House of Commons on her case and the issue of parental child abduction in general across frontiers.

Her campaigns have focussed on the difficulties of measuring exactly how many children go missing every year;[14] the adoption by police forces of the Missingkids Website;[15] and the Child Rescue Alert.

[22] On 12 December 2024, the Conduct Committee of the House of Lords recommended suspending Meyer for 3 weeks for harassment "related to race".

Meyer was appointed Commander of the Order of the British Empire (CBE) in the 2012 Birthday Honours for services to children and families.