I never knew she knew it
When I was in my teens it was just my mother and I living in our house, she drank quite often and I always thought she was passed out. I was around fifteen when I first felt her up under her shirt one night, she had been laying on the couch for about an hour and never moved around at all. I rubbed her arm a little testing how passed out she was and figured that if she did wake up it was just her arm. I rubbed harder and moved her a little bit but nothing, I ran my finger across her shirt right over one of her boobs and nothing.
I guess it was a few nights later she did the same thing and I was really excited because I could tell she had taken her bra off, the shirt she was wearing was not see thru but I could easily make out her nipples. I did the same thing again and no movement from her, I ran my fingers over her nipples and tingles ran thru my body as I watched it getting erect. I played with both of them for quite some time and then just went to bed and beat off.
I did this dozens of times over several months then one night I decided to see them and began slowly lifting her shirt up until they were visible, she never moved a bit. I even licked them a few times and practically came in my shorts doing it. She went to bed one night and I was to young and stupid to realize she was doing it all on purpose, she left her bedroom door open and one of her legs was uncovered almost all the way up to her ass. There was enough light from the hallway and I slowly crept up to the side of her bed listening to her sleeping. I lifted up the sheet and she did not have any underwear on but was wearing a t-shirt. It was to dark to see down into her crotch area so I left and came back with a flashlight, I turned it on and put it right down on the bed to see her pussy. I ran my fingers over her pubic hair and again felt tingles running thru my body as I slowly slid up and down her lips.
So this went on for a long time, like a year and half, me thinking she was all passed out and I was getting away with something. Then one evening she gets up and tells me she is going to bed and I waited almost and hour before sneaking in there to play with her. I had only touched her for a few seconds and she stretched out her legs and spread them out staying on her front side. I stood there thinking I should turn around and leave when I heard her tell me it was okay to touch her some more, I froze standing there wondering what the hell I should do. So I stopped and went back to my room thinking tomorrow was going to be a bad day for me.
I heard some noises and she was standing in my doorway, she told me honestly I do not care that your touching me, I would much rather have you doing this than some girl whose parents would have you arrested so really you can touch me anytime you want I have been just letting you have your fun.
I kept doing it for a few more months then just stopped and she never brought it up again but the thrill of thinking she was passed out was such a rush.
Go for her pussy! Once you get your cock into her you'll never hesitate again.
It sounds to me like your mother maybe will to have sex with you. I'm sure she has been enjoying your attention.