Sorry to see you here, @Miss_L Welcome to the Blog - you are in the right spot to ask any question you think of. That's a bit of a shock, so early in your marriage!
There is a 'Young Women's group (to the right hand side of the page - that you may like to join ..... where you'll be able to ask more specific questions as well - it is a closed group, so not open to the public to read.
Has your Radiation Oncologists give you the 'percentage advantage' that having radiation may give you of hopefully not having a recurrence? I can't remember what I was told - other than it would be in my best interests to have it done - but that chemo wasn't on the table. So I got off lightly compared to some.
So I had the Rads .... and I am now on Hormone Tablets as well, even tho it only gives me a 1% reduction in the likelihood of recurrence ......
As @Wonk says - ask them what they would suggest if it was their mother, wife or sister ....
All the best with this decision making xxx
PS Whereabouts are you (city/town) - we may have members there who know of all the resources available to you.