Van Oosten was born on 2 July 2004 in The Hague. She progressed through the youth academy of ADO Den Haag and made her official Eredivisie debut in 2021. On 29 January of that year, the youth international made her first appearance in the Women’s Eredivisie at the age of sixteen. In the summer of 2024, Van Oosten represented the Netherlands U20s at the World Cup in Colombia.
Technical director Alex Kroes: "Louise is a versatile player who can operate in multiple positions. With her technical ability, she is dominant on the ball, and her stamina allows her to cover ground in attack and close down space defensively. We believe she has a bright future ahead of her in Amsterdam."
