Activities for au pair in Overijse

Dear all,

Our Spanish au pair has just arrived with us in Overijse and although she is settling in well with language classes and sports at the local club, she has not yet found some people to go out for drinks with every now and then. She´s 21 and I think it would be nicest if she´d have a more international circle of friends. Would you have any suggestions on how to meet other ´like minded people ´ in Overijse or wider region? All the people she meets either have kids or are local Flemish/Walloons who already have their own set of friends. Suggestions very welcome!