<human>: Can you succinctly summarize the text in 1-3 sentences?

She and I had been together for just over four years. Had our ups and downs, but she is my best friend and I am in love with her. Recently (weeks) she had become very irritable with me and acknowledged it herself. She said that she didn't know if she was "in love" with me anymore and wanted a break. 
I should have taken it then and there, because what followed was a miserable week. She would say she didn't want to be with me...and then kiss and cuddle me. Very confusing, so I just decided to break up with her because it felt unhealthy.

During the break up she made it clear that she wanted to reassess her feelings and sort of asked me to wait for her. I made no promises but told her that it would take a while for me to move on. She said at most it could be a month, but probably less. That was several days ago. She just sent me an email this morning with a link to an airbnb, offering to pay for an overnight birthday (and graduation) trip for me next week and mentioning that she's already taken the two days off.

I don't really know how to respond to the email. I want to ask her if her feelings have changed I guess, but don't know how to phrase it. My brain is also dead from all the projects I have on my plate.

A bit of context for those of you interested. She has always had pretty low sex drive. She also mentioned that she likes women slightly more than men, but her love for me increased attraction. I suspect that the reason for her doubt is she wants a girlfriend/is losing her attraction to me, but that's speculative.
<bot>: GF wanted a break. It didn't last long so I'm not sure anything has changed, and don't know how to feel about or reply to her reaching out.