Sapna is recognised as a leader in her field, and was recently named as one of Singapore's Top 100 lawyers for 2018, in the A List (Asia's Top Lawyers) published by the Asia Business Law Journal. She was also included by Who's Who Legal in their list of leading arbitration partners under 45 in Asia-Pacific for 2018 & 2019.

Chambers and Partners Asia Pacific 2019 described her as being a "good listener" with "great knowledge" who is able to "identify the core issues, potential options and best approach to reach a solution which is favourable to the client." Who's Who Legal recognised her as "a top name for international arbitration in Singapore", and "a charming advocate, who is well respected within the arbitration fraternity." Proclaimed by various leading legal directories as being, "tenacious in the pursuit of her clients' interests", "very easy to get on with and always open to new ideas", possessing "excellent advocacy skills" and "a leader in India", Sapna is a force to be reckoned with in the practice of international arbitration in Asia Pacific.

She has managed arbitrations spanning a wide range of industries, and governed by all the main institutional rules, including the SIAC, ICC, HKIAC, SCMA, LCIA, UNCITRAL and DIAC. She practised in London, New York and Dubai, before relocating to Singapore in 2011. In 2015, she spent 6 months on secondment to Hilton's legal department in Singapore.

She has substantial advocacy experience and has represented clients in trials and applications before arbitral tribunals, the UK Civil Courts (including the Supreme Court), and the Courts of the DIFC. In addition, Sapna has several appointments as an arbitrator.

She is a member of the SIAC Users' Council and a Director of the Chartered Institute of Arbitrators' Singapore branch. She holds a degree from Oxford University and a diploma in international commercial arbitration from Queen Mary University, in which she graduated with distinction.

Sapna was called to the Bar of England & Wales in 1999 and admitted as an Advocate and Solicitor in Singapore in 2019.