Hi Heather, @hnreinhart12, I'm sorry that you are facing this disease. Cancer isn't fair, and I especially feel for young mothers and their children. I'm glad that you've reached out to your care team and asked for help. You may want to inquire about a group for parents with cancer in your area too. Sometimes an in-person group can be helpful too. For your daughter, depending on her level of understanding, I have heard great things about Pickels Group (https://www.picklesgroup.org/news).
It sounds like you are stable now and settling in with Tagrisso post-surgery. There is real science-based hope for lung cancer now more than ever. There are new advancements being studied and rolled out as each year passes. I was diagnosed (ALK positive, at 49 years old) five years ago, and there are treatments available today that weren't even thought of five years ago. I know of many people that didn't think they would see their kids grow up, and they are attending graduation ceremonies and even weddings. Try to focus on one day at a time and what's right in front of you. Pile that daughter of yours with love and relish in the love that she gives back. Hugs.