[2] She has a younger sister, Mantalena,[b] who is CEO of ELONTech, an organisation aligned to Kaili's parliamentary work on emerging technologies.

[3] She continued her studies at the University of Piraeus where she obtained a Master of Arts degree in international and European affairs in 2008.

[5] She later backtracked and Papandreou won the vote of confidence with all 155 lawmakers of PASOK expressing their support for his beleaguered government.

She was vice president for Innovation Strategy, ICT, Technology, Foresight, Businesses, ESG and CSR, UN, WTO, OECD and the Middle East.

She was an alternate member on the Committee on Budgets (BUDG) and on Delegation for relations with the Arabian Peninsula (DARP)[8] and was also involved in the Commission investigating the spyware Pegasus (PEGA).

[18] The same day she was suspended from both the Socialists and Democratic Group with which she sits in the European Parliament and her national party PASOK.

[16][26] Kaili's lawyers, André Risopoulos and Michalis Dimitrakopoulos, protested the actions of Belgian authorities as a gross overreach of judicial power.

In an interview with Italian newspaper Corriere della Sera, Dimitrakopoulos said that Kaili's arrest and initial interrogations were problematic because she was in a state of shock, fear and confusion and that the Belgian authorities failed to provide her with a reliable French-language interpreter.

[27] On 12 December 2022, the Greek Anti-Money Laundering Authority announced that it had frozen all assets of Kaili and her close family members.

[30][31] On 5 January 2023, Kaili, from where she was held in Haren Prison outside Brussels, complained about her treatment by the Belgian authorities, in particular in delays regarding a visit from her daughter.

Kaili declined to exercise her right, under Belgian law, to meet with a psychologist; however, Haren Prison staff judged it necessary for her.

[27] On 19 January 2023, a scheduled hearing of the Court of First Instance in Brussels rejected Kaili's application to be freed from pre-trial detention and be placed under alternative measures, such as an electronic bracelet.

[38][39] In response to these statements by Kaili's lawyers, a spokesperson of the Belgian Federal Prosecutor's Office said: "I haven't heard anything about this in the file or at any other time".

[39] A subsequent hearing on 16 February 2023 again rejected Kaili's request to be freed or placed under alternative measures, and decided that she should remain in pre-trial detention.

"[45] On 25 May, Kaili's application to lift her house arrest and obligation to wear an electronic bracelet was successful; the release being subject to the usual conditions in such cases, as announced by the Belgian Federal Prosecutor's Office.

[47] In September 2023, Kaili's lawyers secured an internal investigation into how evidence against her was collected and whether her parliamentary immunity was breached.

[49] In April 2023, Politico reported that Kaili was facing an additional criminal investigation over whether she and her former parliamentary assistants allegedly faked missions, trips and documents in order to get reimbursements or travel abroad at the expense of the European Union budget.