Friend relationship

We are 30 years old and there is constant communication from her. If it’s not texts, it’s FaceTime. Even then I can’t have a conversation without her asking what I will be doing in this amount of time, or will I be home at this time or asking me to come over, or hey I might come by in a few. I mean it really feels CONSTANT. I feel like I am turning her down a whole lot because she asks a whole lot. Is this what friendship is??? I care for her and try to be there for her but I can’t be there 247. I know she is going through some things and obviously struggles to be alone. I’ve known her since 2nd grade. We became friends then. Fell off throughout school, no bad reason and reconnected late teens early 20s. I’m getting to the point I don’t even enjoy talking to her. There’s been times where I’ve turned down something and she tries to manipulate me I think to get me to say yes or pushes the subject a little more. I’m single with 1 daughter and have been single for a while so I think just because of this she thinks I have all the time in the world to give her. I’m wore out from this friendship.