Who were 'Maggie' and 'Miney'?

There's a few challenges in the handwriting on this postcard sent in 1906 from Newcastle to New Zealand. Was this a postcard from one sister to another?

Dear Maggie,Hope you are quite well. I have not heard from you for a while.Don’t know whether you received my last cards or not I sent you. On the same day as ... sent .....I am going to Sydney next week for a month’s holidays. I will send you some from thereWith love fromMiney