Maybe this woman isn't the right friend for you and that is okay. It isn't personal or about you ... I imagine she was hoping she would get more people than one to attend. I wouldn't bring up the bible study since she organized it in the first place but if she does, I would tell her something like 'it doesn't work for me right now' and drop it. If you want to keep pursuing bible study, keep looking ... you can find a more reliable group if you are looking for a people to study the bible with. There is large one that meets at my local library.