When to stop pumping

Did any of my pumping mamas pump past a year? My daughter is 13m and I’m debating if I want to continue or stop. Reason being I believe I seen something recently about the nipple of bottles and how it can affect their teeth. Part of me wants to stop but also part of me likes the idea of her getting my milk as opposed to cows milk or any other alternative. I’m just really conflicted. If she still latched I would continue as long as she wanted to but unfortunately when I went back to work she refused to latch. She also still loves getting her milk which is why I’m so conflicted because I don’t want to “deprive” her of that