[1] Pusey found senior success at regional level during her teenage years, repeating her 200 m silver medal at the 1977 Central American and Caribbean Championships in Athletics (this time behind Silvia Chivás),[3] and a 4 × 100 m relay silver medal with Jamaica at the 1978 Central American and Caribbean Games.

In the women's 200 m she achieved a personal best run of 22.90 seconds in the semi-finals, but in fifth place she was narrowly outside of qualification for the final.

The shorter relay gave Pusey a better chance of an Olympic medal, with Ottey, Leleith Hodges and Rose Allwood being some of the Caribbean's best sprinters.

[1] Despite the Jamaican 4 × 100 m relay team being the highest calibre one yet, practice for that event had not gone well, with Ottey repeatedly starting too early and not facilitating the change over with her teammates.

The team still ran a Jamaican national record of 43.19 seconds in sixth place, but Pusey felt her best chance of winning an Olympic medal was lost due to Ottey's mistake.

[12] At the end of this season she was selected at the Jamaican Sportswoman of the Year, dethroning Merlene Ottey, who had won twice consecutively (and who would have eleven further wins).

At the 1982 Central American and Caribbean Games she anchored a 4×100 m relay team of Verónica Findlay, Cathy Rattray and Anthea Johnson to a silver medal behind Trinidad and Tobago.

She led off a 4×400 m relay team composed of herself, Rattray, Johnson and Sandra Farmer, and the quartet secured the bronze medal in that event.

Pusey's final international outing (one day before her 24th birthday) was a run in the 4×400 m heats, where a team including Rattray, Ovrill Dwyer-Brown and Grace Jackson were eliminated in fourth place.