You'll probably be around not only to see you daughter grow up but her children too!
Cancer survival rates are always given on a '5 year' basis. (i.e. they look at the chances of a cancer patient being around 5 years after their diagnosis). If your cancer is only at 'Stage 1' (as it might well be, given that you seem to have picked it up early, the chances of you being around in 5 years time are 98% (and the 2% who aren't about will probably die of something else, such as falling under a bus, anyway!)
If your cancer has reached Stage 2, the odds of you being here in 5 years time are still very much in your favour, at 90%.
Even Stage 3 cases have a fairly optimistic prognosis, with a 70% 5-year survival rate.
So don't start panicking just yet! (Yes, I know it's only natural really. When I was told that I'd got cancer, back at the start of 2020, the very first question I asked was "Will I still be here next year?" So I do know how you feel!)
https://www.cancerresearchuk.org/about-cancer/breast-cancer/survival
With regard to your actual treatment, it looks as if surgery might possibly be involved:
https://www.macmillan.org.uk/cancer-information-and-support/breast-cancer
NB: The internet is crammed full of information about cancer, with some of it being far more reliable than others. I've deliberately chosen to use links above that go to the two sources of information that hospital staff have told are fully trustworthy. Even so, my real advice is to ask the team at your local hospital loads and loads of questions, then go away and think up even more to ask them shortly afterwards. Far too many people end up worrying about cancer because they don't ask the people who actually know everything about their case!