AITA for helping my sister build

I (14mo M) was studying some literature (Brown Bear Brown Bear, What Do You See?) when I noticed my sister (3 yo F, coolest person I've literally ever met, a real trendsetter) building a block tower. Naturally I realized this was an invitation for me to help her build. I generously paused my studies and scooted over to her. I helpfully grabbed a green block out of the middle and the tower scattered in a very satisfying and elegant way. I thought she'd be grateful about this improvement. But my sister shrieked and said something about "her space". Now I'm worried she's threatened by my superior artistic vision. AITA?