I think most people that became disillusioned with Maya didnt take issue with her not spilling all of her personal issues with MC within the first few nights. I would agree with you if that was all it was.I think what has annoyed me most about it sure she has kept things from us but she is in no way obligated to tell us everything right away what would be the fun in that learning about her in one update secrets included people would end up losing interest in her if that was to happen.
I think most people were irked with her "you need to be completely honest with me, while i hold things back" direction.
Whether or not that is forgivable will be up to each MC, as well as what Maya, herself, will do to rectify that.