Purpose of Travel for my mother

[Elli]

I'd be grateful if anyone can help me with a sample purpose of travel letter?
Is there any sample for purpose of travel for my mother? I am pregnant and I invite my mother to be with me what can I mention in her purpose of travel in order to convince the visa officer?

 

[bellaluna]

am pregnant and I invite my mother to be with me

That is never a good reason to give for purpose of travel, as it implies your mother will be taking care of you or your baby, i.e. working illegally.