<human>: To make a long story short, she broke up with me last year around May and we had been dating for about 3 years.  Nothing crazy sparked the break up, she decided it wasn't what she was looking for any more. I was heartbroken and couldn't understand why she did it. She cut all contact with me and blocked me on all social media.

Sometime around January of this year I was browsing through my Facebook feed when I saw her name on my screen. I knew she had blocked me when she broke up with me so seeing her name sparked my interest. I clicked and saw that I wasn't blocked and what she had been doing for the past 7 months. I decided to send her a message asking how everything was going and that I had been thinking about her a lot (Which I had been). I didn't receive a response.

Fast forward to Saturday the 11th, I had just gotten home from work, showered and had thanksgiving dinner with my family (I live in Canada). I check my Facebook and there is a message from her. I was shocked, until I opened the message. My thoughts quickly turned to confusion, the message only reads "I'm Fine." My first thought is maybe she isn't sure how to initiate conversation after this long. She might be extremely nervous about opening up communication with me. I sent her a message back asking about her family and her 2 dogs. I was trying to keep the conversation away from her as to not make her nervous. 

This is where I don't know how to proceed because she hasn't responded, even though I know she read it because Facebook shows she did. I know messaging her a second time is the wrong way to go about it. I'm just extremely confused on why she would message me in the first place if she had no intention of continuing the conversation. Should I just wait it out or should I send a second message ?

Give me a shortened version of the text
<bot>: Sent Ex GF a Facebook message in January, after 8 months she responded. I sent her a response on Saturday but