Im rubbish at reading body laungage. So would be good to get a experts advice.

Heres the background
We are both 22. I have a good job, and good pay. I'm not the in the best of phyical fittness but I have been told I'm adverage. She Is probably what you would call a HB(8).She what you would call very confident but also very sweet and freindly and hates sleezy guys.

I meet this girl 5 weeks ago through a freind. Did'nt really get a chance to speak much in our first meeting but some how I got invited through the same freind to a BBQ of hers a few weeks later. We spoke abit more there and Invited her to a small meal with freinds I was arranging which she instantly said yes too. Between then and the meal we spoke on and off on facebook but she was'nt too chatty.Nor was she by text. Meal came and it went well. She enjoyed her self and had quite a laugh. Found out aswell she was rather ill that day, but forced her self out to meet up. I took this as a big IOI as I have had girls (even girlfreinds) cancell for far less.

Since the meal she still has'nt been very chatty via text or facebook, which is causeing me some concern. BUT yesterday I asked if she wanted to meet up next week for a cofee durin the day. Again she instantly said yes and asked for me to send her a list of free days. I did so and she got back to me with a time and day to meet her.

She keeps telling me she is very very busy which is why she slow to contact back. And I'm seeing her this sunday at a party that another freind has arranged.

So good signs? what should I do next?

she may just not generally not like to talk over facebook or by text, im not too sure.. i have to admit it is quite strange