She Is Angry With Me Because I Refused To ‘Sleep’ With Her.

I am a guy in my early 30s. I have a friend let’s say K who is one of my close buddies at work and is 44years. K is a staunt womanizer and for that matter everyday he knacks but that is his personal life though I try to talk him out. We are so close that I could go to his place at any given time and mostly when I get tatata appointments it’s his place I go to.
K have a daughter who in her early 20s but not staying with him and anytime she comes around I go to visit because I was that close to her as well but I promised myself not to have anything sexual to do with her because of these three reasons:
1) i am married and have a daughter
2) I wouldn’t want to jeopardize my friendship with her father
3) he trusts me I won’t knack his daughter so I want to keep that trust.

As I said , anytime she comes to visit her dad I mostly go there to see her.
Now the issue is I had a visitor and had to go and lodge with K for 2 weeks and it happened that she also came for her visit so we sit ,chat ,eat together etc. Mostly her dad is not even around ,it is just she and I in the house even on weekends because he would travel on Friday evening and come back late Sunday night or Monday dawn but I tried to keep the promise I made to myself.
Fast forward, my 2 weeks was up for me to leave because my visitor was gone so one morning I went to her in the bedroom, sat by her on the bed and held her waist as she was lying down and covered herself with a cloth( note: holding her waist was normal as I always reffered to her as my girlfriend and K was aware about that so I sometimes call him in-law). Whiles we talk, I could feel her waist beads and she was giving me green lights which I ignored. I later left the house to town but continued home even without taking my things because I could always go for them so I didn’t go back though I was calling her to check on her constantly especially as her dad still wasn’t around. I do promise her of my coming which I was not able to fulfill until she left.

Now this is where the issue is, since she left back to where she stays, she does not pick up my calls. Sometimes I assume maybe she wasn’t with the phone but it is almost a year now we spoke and she is still not picking.
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So I want to know if I did the right thing by keeping to my words or I should have knacked her?
Because this attitude of hers is really making me regret.