Can someone please help.. honestly don’t know what to do

So basically I’ve started slowly planning my wedding, looking at different venues, colour schemes etc, and my best friend gets shitty anytime I talk about me being happy with something.

So she messaged me today asking how I was, and I said I was great, and she asked why I was in such a great mood, to which I didn’t want to upset her even further, so I just put “I just am” and then I felt like a liar. So I just messaged her and told her that basically I didn’t feel like I could talk to her about the wedding, and that she gets moody every time I bring it up etc..

And this is what she replied with, and I honestly have no clue what to do. Am I just being sensitive or is she in the wrong? Some people are telling me I shouldn’t invite her to the wedding, and now I’m just stuck...

They’re not in order unfortunately! The second one is the first messaged, then the long pink one is my reply, and the top message is her reply..

Update**

I know it sounds bad, but I honestly don’t have a lot of friends, her and one other girl are the only friends at my wedding.. I hate it, I always wanted loads of friends at my wedding, and in reality I’ve got less than a handful...