At the senior international division at the 2013 Holon Grand Prix she won silver in all-around and gold in ribbon and hoop final.

At the 2013 World Cup series in St.Petersburg, Russia, Halkina finished 7th in all-around behind Azeri gymnast Marina Durunda and again qualified to all 4 event finals.

[13] At the 2014 Stuttgart World Cup, Halkina finished 12th in all-around and qualified to 2 event finals where she placed 7th in hoop and ball.

On May 9–11, Halkina finished 5th in all-around at the 2014 Corbeil-Essonnes World Cup, she qualified to 3 event finals and won silver in ball.

[15] On August 8–10, Halkina finished 13th in all-around at the 2014 Sofia World Cup and qualified to 2 event finals, taking bronze in clubs and placing 4th in ribbon behind Maria Titova.

On September 5–7, Halkina competed at the 2014 World Cup series in Kazan, finishing 4th in all-around with a total of 70.400 points, just behind teammate Melitina Staniouta, she qualified to all 4 event finals and won her 2 bronze medals (clubs, ribbon), 4th in ball and 6th in hoop.

[16] On September 22–28, Halkina (along with teammates Melitina Staniouta and Arina Charopa) represented Belarus at the 2014 World Championships where they took the Team silver with a total of 136.073 points.

On March 14–15, Halkina competed at the 2015 Baltic Hoop finishing 7th in all-around and taking silver in ribbon and bronze in clubs finals.

On March 27–29, Halkina then competed at the 2015 Lisboa World Cup finishing 6th in all-around, she qualified to all 4 event finals: bronze (hoop, clubs), and 4th in (ball, ribbon).

Halkina and teammate Melitina Staniouta represented Belarus at the 2015 European Championships, where she won 3 medals: team silver and 2 individual bronzes for hoop and clubs.

Halkina then competed at the 2015 Holon Grand Prix where she finished 16th in all-around after a drop and roll out of carpet from her hoop apparatus.

Halkina finished 11th in all-around at the 2015 Grand Prix Berlin, she qualified to 2 event finals: won bronze in ribbon (tied with Margarita Mamun) and 4th in ball.

Halkina then finished 8th in all-around at the 2015 Summer Universiade, she qualified to 3 apparatus finals placing 4th in clubs, and 8th in ribbon, hoop.

In August, Halkina competed at the 2015 Budapest World Cup finishing 6th in all-around behind Ukrainian Ganna Rizatdinova, she qualified to all 4 apparatus finals taking bronze in ribbon, 5th in hoop, and 8th in clubs and ball.

On September 9–13, Halkina (together with teammates Melitina Staniouta, Hanna Bazhko and Arina Charopa) competed at the 2015 World Championships in Stuttgart, with Team Belarus winning the silver.

[22] On April 1–3, Halkina competed at the 2016 Pesaro World Cup where she finished 13th in the all-around and qualified for hoop, ball finals.

On May 14–16, Halkina then finished 5th in the all-around with a total of 72.700 points at the 2016 Grand Prix Bucharest behind Georgia's Salome Pazhava, she qualified to all apparatus finals and won bronze in ball (tied with Dina Averina).

On March 24–26, Halkina then competed at the Thiais Grand Prix where she won the silver medal in the all-around ahead of Russia's Iuliia Bravikova.

Then, Halkina competed at the 2017 European Championships in Budapest and won the team all around silver medal with Alina Harnasko and the junior group.

She qualified to all the apparatus finals, taking gold in ribbon, 2 bronze medals in clubs and ball and finishing 8th in hoop.

On November 5–6, Halkina competed at the Dalia Kutkaite Cup winning the silver medal in all-around with a total of 74.350 points, less than 0.5 behind gold medalist Aleksandra Soldatova.

After skipping a few international events due to a minor injury, Halkina returned in competition at the 2018 Pesaro World Cup finishing 5th in the all-around, she qualified in 3 apparatus finals placing 7th in hoop, ball and 4th in ribbon.

[31] In September at the World Championships in Baku Halkina, along with Alina Harnasko and Anastasiia Salos, won team bronze.