Attractive woman, sexually attracted, then disappeared.

Hi, 2 months ago I met a nice woman, 3 years younger than me, in a chat.
we are both married but started chatting about simple things and word after word we felt more and more interested into talking to each other...We exchanged few nice messages and found we had for each other sympathy and attraction. Then I had to leave for the holidays with my wife for nearly 3 weeks. The woman of the chat said she would wait for my return. I was sure this would not happen and instead when I was back we started chatting again and after one day I proposed to meet for a date. We felt so natural sitting on a bench in the woods next to each other as if we were friends since several years. A really nice afternoon. The next day she asked me to meet again, this time we went to a lake and could not resist but passionately kissed each other and then had sex, wild, passionate, beautiful... as after the first date she wrote me nice messages to tell me how nice it was with me and that she already missed me after few hours and that she looked forward to our next date. I replied to these messages in the same passionate and sincere way. I was also feeling that it was all just running like in a dream. She said textually " I am addicted to you, I like it so much to touch your skin".
we agreed to only communicate via email to avoid to be cought on our whatsapp/messenger/faceboo/sms etc

We met again the third time in the same week, this time she proposed to take an hotel room. We spent over 2 hours together, teasing each other, making love and then cuddling. She even started kissing my xxx and when I was about to come instead of pulling away she stayed over it and took it all in her mouth. In only felt that intimate with someone another time in my life...
again the same evening she sent me the sweetest messages. I just felt so happy to have met her... we spent the nicest 10 days in a long time. messaging frequently, meeting at every occasion....
after the second time we made love, since I couldn't send her flowers at home, I bought flowers, placed in my kitchen and sent her a photo of those

then

the day after she wrote me a message where she said that she wanted to continue our relationship but being more careful, because she didn't want to make suffer anyone (including our respective partners). She had weird feedback from her husband as if he could have suspected something but she herself recognized this must have been only her impression because it was clearly impossible he could have known anything about us.
the last words of her email were textually "...at the same time I have already a strong desire of you and I want to see you again. It is fantastic with you. Let´s wait a bit. Warm kisses."

after that message I haven t heard a single more message from her... in nearly 2 weeks.
I wrote to her a first time to ask her if it was all ok, to reassure her that it was a fine and also my wife had no idea of us.
then i wrote a second time after 2 days, to ask if she was ok.
then a third after another 3 days.

I don´t want to insist in writing to her, if she needs her time I can cope with is, if I know... 3 weeks ? one month? ok I miss her but I am ok because I know is "normal and agreed".
What makes me suffer is that she left me hanging. I don´t know what happened, how come she can change from needing to see me and having sex 3 times in the same week, to not even writing to me "it is all fine I just need a little more time for myself" for the last 2 weeks...

weird, right ?

does anyone have an idea of why a women would behave in this way ?

if it was about the sex not being nice why would she have asked for more two more times ?
if it was because she didn't want to hurt her husband, why couldn't she just write it to me. "i understand it was a mistake, my place is next to him"... and bla bla bla...

for anything... a short message would do....

I only know her first name and the street where she lives (not the house number) and know she works as an assistant doctor in town ( but not in which hospital)....

I am lost, how can I communicate with her again ? at least to know if it is over and why ?