A Hoodie And Socks

So I'm friends with this incredibly beautiful older woman, about 37, her and I are quite close and talk about most things openly. She has been married for just over 3 years now relatively happily. Anyway her husband is out on a job for this week and I am too but much much further away. We were texting last night as we always do and I asked her if it was cold where she was. Her response was that she is wearing a hoodie and socks so it is a bit chilly.
I should now mention that we've always been a little flirty with each other but it's stayed as just that I think more out of fear for her marriage and respect for her husband, a good friend of mine too. I closed my phone to go make some food and when I got back I saw she had sent me a picture. I opened it.
It was her, wearing a hoodie and socks like she said, only she was lying on her bed with her legs in the air and her beautifully wet, pink pussy staring back at me via a mirror that they have in their bedroom. I thought she had sent it to the wrong person and asked as much. She assured me that she didn't and I needed to "come home and see for myself"

So I'm on a bus right now horny as fuck thinking about fucking my super sexy "big sister"