It sounds to me like you are still doing everything right. Your XW may or may not have bristled about the OW's bringing you food (suggesting you may be projecting there, but either way it's cool). I think it's great that other women are noticing you (I know they have been for a while) and that you are ever so slightly opening that door. I think it's good that XW realize that other women are interested in you.
To be honest, I think that's one of the primary things that really woke up my SO. During the spring/summer when I wasn't dating anyone (post-Mr. Professor), SO would often make jokes about my joining a convent. I made it clear to him that I was living my values (i.e. holding my continuing love for him in high regard and honoring it).
I think when he told me point blank not to wait for him in late July, the light bulb really began to glow for him, b/c he knew, somehow, that I was starting to take that to heart.
Back to my point -- I think it's good for your XW to know, to see, that other women find you worth pursuing. So, keep that door open, honey.
I'm sorry S6 was ill over the holiday. Be careful about blaming that on XW and her schedule. Just because they are eating take-out does not mean that he's not getting balanced, nutritious meals. Does he take a multi-vitamin? If not, now might be a good time to get him started, especially during the school year.
I made it clear to him that I was living my values (i.e. holding my continuing love for him in high regard and honoring it). 
