I m 22,m my teacher tried to seduce me in tuition cl now what?

I am 22,m,a scholar student.Started tuition with my neighbor married lady (28). I go at her home in the noon? 4 days ago she started caressing me on thighs, kissed on neck, n grabbed my ___ from over my trousers. She once also came in front of me in her knee length nighty (normal girl won't do it) i am afraid what to do now i am in really bad situation just don't have clue. She also tried to attract through seductive clothes but i over saw that until this happened. I am legal but still don't feel that i am that mature to take such risks. can it be a trap for any reason?