Support with my emotions while partner has treatment

My Dad passed away from cancer 31 years ago. It was incurable. I am grateful that my husband’s was found early at stage 2. 
Having depression and anxiety has made this a difficult journey for me. Watching someone you love go through this is so painful. 
I find it helps to talk about how I’m feeling with someone not related or close to us. There’s so many conflicting emotions! 
I hope the very best for your fiancée, and also for you. It is not easy. 

I'm so sorry to hear about your dad. Cancer is a F##King arsehole.

It is helping me taking to people on here. Its nice to know we are not alone on these hard long months. Its definitely not easy especially with mental health to battle too. I feel really selfish thinking about me. But like my fiancee keeps telling me we are battling this. X

It’s not selfish, it’s completely understandable that her illness is affecting you. One thing I’ve learned through this, is that we are only human, we feel, we hurt, we desperately want to help and feel helpless when we can’t. Try and do small things that help you or make you happy. We need to look after ourselves, so that we can support them. 
I’m sure you are doing great! 
Your fiancée is right, you are both in this battle.