Mom visit from overseas

My mom visited me in Dec 2017 from India. She was tired and had back pain due to a long flight. One day when we were resting all of a sudden she asked me to put some pain relief gel on her back and cream on her hips, she started pulling her top and lower a little down and asked me to put it. As I was doing it, It just turned me on, I was so happy, now every day I think about the same and just feel like f her. Also, the next night, I slept in the same bed, I tried to make my d hard and put it against her hips, and to my surprise, she liked it and came closer.
However, nothing happened. I was so happy to get hard and touch her hips.