El deseo de verla dormir

I'll tell you something that's been happening to me for the past couple of nights and I don't know how to act, I don't know what you think about all this or how you would react in my case...

The thing is that a few nights ago my mother fell asleep in her bed completely naked, I realized it, she's an old woman, but anyone would get hard at the sight of her, she doesn't have a model body, but she has a body that would call attention to anyone and apart from having a good neck (big, not fat) and apart from having a couple of big tits (they look like two balls)

I don't know what to do, every time I realize she's going to bed naked, I get desperate and excited, it drives me crazy to see her. The thing is that I'm too afraid to take the next step because of the trouble that could happen, only if I catch her naked while she's sleeping and sometimes I masturbate looking at her and take some pictures of her ass and I love seeing her tits, but I don't know how to keep going or what to do...

I'm not brave enough to go further because I'm afraid she'll wake up and say something and get angry... even spying on her while she's taking a bath and I love it like this, it's never happened to me before. If anything happens, I'll tell you. What do you recommend I do?