I'd only reply to her in the briefest terms possible, ie, "Yes, very busy, sorry must run." It will drive her mad. Sounds like you are feeling better about it all, keep up the good work. My best friend had a problem with a woman from her son's football club, very similar, she used to park in her street and wait till she came home and then ring her and berate her about weird things. My friend was terrified of her, the woman even got her husband to ring my friend's husband at work and tell him to "get the girls together to sort it out". Finally my friend developed a spine and just told her to "just leave me and my family alone". It took a while but she finally gave up. Its difficult for you because she lives near you but she knows she's upset you so it will be easier now to keep on avoiding her, just don't reply in any way to the "are you upset with me" texts. Just ignore those.