She is the second member of Team Jewson MI Racing to achieve international selection this season.
In January, Greg Ashley from Braunston was selected for the World Long Distance Triathlon Championships in Las Vegas later in the year.
Samantha finished 3rd in the recent Dam Busters Durathlon at Rutland Water, her debut at the discipline, having represented Great Britain in the World Triathlon Championships last year in Budapest, Hungary.
Her third place at Rutland was remarkable as she had only had her tonsils out two weeks before and has had very little training for the event.
She will continue to build up her preparation for the World Triathlon Championships later in the year.
Her split times in the Dam Busters event were 10 km run: 40 mins 41 secs; 42km Bike: 1hr 22min 58 secs and 5km run: 21 mins 46 secs.