 This message baby steps towards the close. You should allow the girl to say yes to each step individually to minimize flaking.
Student: Kids are year 3-6. They try lol but it’s always the small ones you can lift with one finger that act all hard
Her: Woman of mystery. When are you free? Well I hope you’re not lifting kids when you’re on placement lol
Student: Free maybe saturday & sunday eve this weekend. No lol not about to start wrestling kids 
Her: Okay, Thursday is probably best for me but that might be too long for you to wait… I could be tempted by this weekend, busy Friday night and Saturday day currently
Student: We could do saturday night
Her: Where would you fancy going?

Ever been to (name of venue)?