Many people with ADHD have trouble with executive functions, like planning, organization, working memory, etc… It can make it difficult to follow through and get things done. The explanations she gives sound like a product of her ADHD.
Try asking her what you should do when you don’t receive a response. Is it ok with her if you text again if you don’t hear from her after a certain period of time, for example.
If she’s telling you it isn’t personal, try to believe her. While it may feel personal on the receiving end, absent any explanation, that could be anxiety and not the fact of the matter.
ADDitude Community Moderator, Parenting ADHD Coach, Podcaster & Author, Mom to teen w/ ADHD, LDs, and autism