O livia Smith is tentatively laying down roots but remains alert to the changes that can be produced by football. The 21-year-old Arsenal forward, who has nine goals and three assists in her first season in north London, has lived a nomadic football life, driven by a desire to continuously improve and move up the ladder, rung by rung, without a pause. As the season reaches its climax, a Champions League semi-final against Lyon on Sunday is testament to how far up the ladder Smith has climbed. Now, she is heading towards unknown territory: a second season at the same club for the first time in her senior career. “I do feel quite calm now, knowing that I have set down some roots here, but at the end of the day, football is football and you never know what’s next,” she says.…