Jolly, you have to be strong and learn how to coach her. So when she cuts you off you have to learn how to say, “you probably didn’t realize that you cut me off. I wasn’t finished. Let me finish my story and then you can tell me yours.” Don’t bring feelings into it.
If you want to do something and she tries to steer you in another direction try to assert yourself and say “that’s a nice idea too, but today I was counting on going… or today I promised myself I would…so do you want to come with me?” Honestly Jolly, if she gets insulted it is NOT your problem.
You two have two different personalities and you can’t blame her if YOU cannot stand up for yourself. YOU need to take control of your own accountability in this friendship. YOU need to take charge of your own needs. Why are your feelings any less worthy than hers? Why are her feelings the only ones that matter here? Seriously? You have to ease her into the reality of the situation without telling her it is all her fault when it really isn’t all her fault. If you allowed yourself to give in to her then it is also your fault. Learn to stand up for yourselff she is not fine china and if she gets insulted, she will have to learn to get over it she will not break into tiny shattered pieces. YOU are entitled to have your turn as well you just need to learn how to do it appropriately.
So find your inner strength and learn how to say “that is a nice idea and maybe we can do that another day, today I planned a different outing do you want to come with me?” after all you are the driver and you are in control.