Girls, I need your help please, what does this girl mean?

Ok, the story is, I dated a girl for 5 months, then we decided to be friends because she thought the relationship went so fast, and many things happened in a short time, so we decided to be friends based on what she wanted, it's been like 7 more months without any contact and without seeing each other even once (she tried actually to text me like 2 times after deciding being friends, but I was responding to the point, and didn't try to text her anymore during these 7 months, and she didn't do the same too), I texted her a month ago asking how is she doing and what not, she replied in the same day nicely and to the point. she texted a week ago again thanking me for the text to her! (keep in mind she already replied to my text when I sent it to her), and asking how am i doing etc? What does that mean?

PS. we are going to meet soon for the whole summer with other friends for some summer activities