How do I tell my 9 yo?

[Dizzylin]

My mum is Terminal Cancer, she was diagnosed in January, initially we thought it could be cured but in March we found out the Chemo wasn't working and there was nothing more they could do for her.

DD knows my Mum is ill and that it's cancer, what she doesn't know is that she's not going to get better. My mum has been feeling very ill this past week and seems to have gone down hill.

How do I tell my DD that her Nanna isn't going to get better?

I’m so sorry to hear that.
Ask her to describe what they already know about the situation. She may have already considered the likelihood of her granny dying.
Be honest with her. Use simple clear language. Don't overload her with information and be guided by the questions she asks.
I think she’s old enough to have a choice about seeing (or FaceTiming) her grandmother. This will allow her to say goodbye. It is important to describe what this will be like, where it will take place and what your DM will look like.

My friend died a few years ago from cancer. They were supported by a local bereavement charity. I remember her telling me that children should only know the current details, so if you say 'she's going to die' and then she is with us for months they are confused about why this hasn't happened.

She won't get better from her cancer is probably better and if she asks if she will die then you can say eventually yes but we don't know when. I don't know if this is good advice but it stuck with me.

I am really sorry you are going through this.

Thank you both. Really good advice.

I think for now we will go with current details, my mum hasn't told us how long she has but I think the simple "she's not going to get better" is probably the safest route for now.