How to I talk to my mum?

First of all, hello everyone, I’m new to this forum. I’m looking for some advice please and thank you x My mum has been diagnosed with terminal cancer of the liver and spine. I want to visit her but I honestly wouldn’t know what to say. I don’t want to say the wrong thing and making her upset or make her cry, she’s dealing with enough. We aren’t really close but she’s my mum and I love her endlessly. Can anyone please give me advice? Thank you so much x