Goalie is the one position that playing up is understandable. Other positions have many girls and subs to mix and match, and positions are easier to fill. Face it there are only so many goalies out there, if a younger team has enough goalies to cover and one is brought up to fill a need that is acceptable. If she is brought up and is displacing an older goalie and/or leaving the younger team compromised, then it is not right. Not familiar with this instance but if nobody was displaced and the teams are better off, then it makes sense.