My gut tells me to just give up and ghost, but I don't know why she keeps responding.

I invited her over to my place to watch a movie, and turned out she already had plans at the time I provided. I said ok and offered coffee the next day at a specific time.

She said yeah sure and that was the whole text conversation.

The next day rollls around and I text a few hours before to make sure we were still on. She waits until an hour after the time and says "oh shit I am so sorry, just saw this"..... haven't responded, should I just ghost?