Thanks for that information, barakta.
That's just bloody awful; maliciously reckless. The actions of the defendant were not what I would expect in that position, whether offside or not - I would expect her to drive upwards into the attacker's chest & shoulders to force the player from the ball, and either pick it up or drive over for following teammates to pick up. When the game's laws give so much opportunity to exert significant force on opponents, why bother doing it outside them? I would hope that the RFU instigates a lifetime ban from rugby (her values seem poles apart from the game's core values), but I'm not sure they will.
My daughter (similar size & only slightly heavier than the claimant, but trained at a high level for some years) was bent double at the back of a ruck while playing scrum-half in a Premiership game a couple of years ago, luckily emerging to walk off with very sore lower back muscles, and not due to malicious play. As Peter says, chilling indeed...