Hmarzote was born into a family of agriculturists in Kolasib, a town approximately 80 kilometres (50 mi) from Aizawl, Mizoram.

[4] Her father, Lalthansanga Zote (d. 2019),[5] served in the Indian army and later worked as a farmer and her mother, Lalzarmawii, a homemaker.

[7][8] Struggling with Hindi during this time, she picked up the language with the help of teammates who call her 'Siami', a shortened nickname of her full name.

[9] Hmarzote was included in the under-18 India side that played at the Asia Cup in 2016, before being drafted to the senior camp the following year by Baljit Singh Saini, then coach of the junior team.

Receiving an assist at the far post sent in off a long corner by Reena Khokhar, Hmarzote scored off the reverse stick on seeing goalkeeper Martina Chirico advance, giving her side an early 1–0 lead.

[23] In the five-a-side event at the Buenos Aires Youth Olympics that year, she helped India secure a silver medal, their first in the history of the Games.

[32] She was subsequently appointed the chief coach, a group A post, under the Mizoram sports and youth services department.

[36] In the Asia Cup that year, India won bronze; Hmarzote scored twice: in a 9–0 win over Malaysia[37] and a 2–3 loss to South Korea in the semi-final.