6 years old? I thought you were going to say 6 months! As others have said, a 6 year old is easily distracted, and it's your job to do it! If she says she's missing her mum, just talk about what a fun time you are having and all you will have to tell mum when she gets back.
Glad to hear all the housework will be set to one side - it's your chance to have a wonderful time. Enjoy x
Is it me or am I getting mixed messages