Honestly it sounds like you have plenty of ground to stand on without it being mean. I would say accept her offer and while you're together, say something straightforward like "Hey, I feel like whenever I try to make plans, you aren't interested; is there a way we could plan things a little more cooperatively?" (or whatever – make it sound like you)
Im not necessarily begging to hang out Im just frustrated that things always seem to be when she wants to do it and I bend to her will. I have other friends and she's good to talk to which is why I am hesitant to just drop the friendship im just frustrated with how she behaves at times