Frustrated with friend

I went through a terrible time last year as my wife cheated on me. I adored her and it came completely out of the blue. This was in January. She stayed in the house until April then my mental health could take no more so I asked her to leave. This was for my health and so she could come to a decision about what she wanted. In July, she said it was over. Throughout those months I relied heavily on family and friends particularly a friend who I will name Hayley.
Hayley was diagnosed with a bowel condition back in March last year but despite this was a constant source of support to me over my separation. I also tried to support her with her illness and we texted regularly, almost daily.
A few weeks after my ex said we were finished, I met my now partner. None of us planned it but we got together and are extremely happy six months on and I have introduced her to my child. Problem is, Hayley isn't happy for me. She said it hurt her when I distanced myself when I first met my partner and I feel she is now distancing herself and acts very quiet around me and my family. She says she is very worried I am moving too fast. I take her advice on board but things have got worse since I told her about the introductions.
I know people will automatically say she has got a crush on me but I disagree. How do I resolve things here? I told her she was still important to me but she doesn't believe me it seems. My priorities are different now and I am not in touch so much anymore but that's because I have a partner. Thoughts?