Hi, think i watched this film about 3 years ago. I think it was about a young girl in a small town.  She takes a job for a mum and kid but i think her friends wernt sure she should take it.

Her friend is a girl and they talk and kiss but her friend has a local lad who likes her.   When shes looking after the boy i think hes shy.  He can move a ball i think and retrieves it from a locked cupboard using powers.  In the end it turns out the mum and kid are aliens or creatures that feed every so often and they try to attack the girl.