Why has Millie started crying?

Millie is sitting in front of me sobbing, so I sit down on the floor next to her, I hug her and try to console her even though I have no idea why she is upset.

Knowing that women when they start crying need to finish I just sit there and hug her, waiting for her to finish.

After a few minutes, she starts to talk:

"Matt, I am sorry for getting this way, but this was a really emotional moment for me. I have not had a cock in my mouth for several years, since my marriage was sexless for years, so I wanted the moment to be perfect."

"I was not sure I wanted your cock to be the first I sucked after so long, but we had a nearly perfect evening, you are so nice to me, so I decided to suck your cock."

"Then I was down there, thinking about all that is going wrong for me, divorcing, needing to find a new job, moving house, and then I felt low that here I was sucking a man's cock who is half my age, and is that another thing showing how my life is sinking?"

"Then I wanted to make the experience perfect for you and swallow your cum, but I had forgotten how it tastes after so long, you shot some of it down my throat, and you came so much into my mouth that I struggled to swallow your cum as it shot out, so my mouth was filling up with cum and I gagged."

"I am really sorry for ruining what should have been a perfect evening Matt."

I try to calm her down, tell her I feel very emotional too, that her mouth gave me pleasures that I have never experienced before, but while she does not start crying again, she is still very emotional I can tell.

We sit and talk for a while, but then Millie looks at her watch and says I should leave since Ashley is likely to come home soon.

She walks me to the door, gives me a brief kiss on the lips as a goodnight kiss, then walks upstairs, goes into her bedroom and closes the door before I have walked out.

I am thinking of following her upstairs, but then I have gotten her to suck my dick for the first time tonight, and I have cum in her mouth, which is another first, so I could end up sitting around listening to her being emotional all night with no possibility of any more action with her. Does it make me a "nice guy" if I head upstairs to check on her, or will it annoy her as she asked me to leave since Ashley is on her way?

I stand there thinking, and realise I have been standing there for a few minutes so need to make my mind up quickly.