A pattern seemed to emerge in the first half. Despite the Blues commanding possession, attacks would break down seemingly at the vital moment leading to a swift response and counter from the Ospreys.
In what was a tit for tat first half the Blues handling and team interplay was met by some stand out individual performances from the Ospreys youngsters.
Slick handling and unselfish play put the nimble Niamh Gibbons in for a try in the corner. The Blues swiftly followed up that success with a try for one of the stand out performers of the day - Amy Thomas, a barn storming blindside run leading to a well taken try from the deceptively quick forward.
Tries from Rachel Morris and Jess Pritchard put the Blues in command at 22-14 but a mistake led to a swift pick up from Ospreys' Jones who scooted past a posse of players into open field. With only the fullback to beat her deft chip and one bounce re-gather was easily the highlight of the evenly contested first half.
A different Blues team came out for the second half with a few positional changes leading to more continuity.
Rachel Morris's transition from wing to No8 seemed to spark her interest in the game. A strong run led her through the Ospreys pack and into open field and an offload to the Blues captain Megan Jones saw the youngster extend the Blues lead.
Morris and Thomas advanced the scoring with well taken tries. With Megan Jones already on the scoreboard once again in the second half there was just enough time for the Blues to string together the best try of the match.
Two rucks followed by a break led to the ball being passed through several sets of hands before reaching Chloe Brock. In her cameo wing role, the second row galloped in from 25m to put the icing on the cake for the Blues. With Jones nailing five out of six conversions in the second half, the Blues finished up with a convincing victory, something that looked unlikely just two minutes in.