needy insecure people and how to distance yourself from them

How do i handle an friend who texts me first thing in the morning, " i feel you are avoiding me". Its so needy and insecure.  I dont even know how to respond to the text. I have never ignored her calls or texts. I dont know what she wants from me. All i can tell her is i have been busy and im not looking for confrontation right now. I dont feel like defending myself first thing in the morning. I wasnt avoiding her but after she got all weird the last thing i want to do is hang out with her. Any advice? Im too old for this shit. I would never text anyone something like that. There must be something wrong with her