My mother in law

So I have the strongest set need to have sex with my mother in law. Is she Hot? No. But she is my motherly figure.Im 44 and she is 70. Tall skinny with no boobs. I have in the past found ways to be naked in front of her. She glanced looks at my cock and such. One time I told her that I was embarrassed to share this with her but I have a lump on my groin and was worried about it. Being the motherly natured woman she said in a very professional way that she would take a look. The reality was there was no lump. So I went into the bathroom with her and dropped my pants, then slid my underwear down exposing my cock that was slowly getting hard. She said is it necessary for you to have your underwear off. I ignored the question. I said it's right here feeling my crotch right next to my balls and cock. She then put her hand there just breezing her finger tips past my cock. She said sorry I don't feel anything. And pulled her hand away. I said it's right here. She then ran her fingers over my where I was pointing at. By this time I'm hard as a rock! She said I don't feel anything but if that was your way to have me see your penis up close, thanks it is a nice penis. Ughhh she walked away so I finished myself off. I walked out of the bathroom and it was like nothing ever happened. Not sure what my next move will be. I'm still trying to come up with something.