Time for some more criticism. Normal and the hard difficulty, where do I start with this. I just recently went back and played on the normal difficulty and let me tell you that IT WAS A NIGHTMARE TO PLAY. I couldn't even get past the first fight because she kept using attack after attack that I can't even keep up with what's going on. I feel like you intended to make the game naturally hard but this I can't play. The hard difficulty is probably going to be literally impossible to play since the game is already hard with the other difficulties and to top it all off in that difficulty you can't recover any lives or card or whatever they are meaning through most of the game you probably have to flawlessly go through the entire game without losing any HP at all. Pretty much all the difficulties in the game are misleading but REMEMBER that this is only MY OPINION AND MY EXPERIENCE THROUGH THE GAME SO FAR. Don't take any of this way too seriously and only take them to a little consideration. No pressure on the development of the real deal and keep up the good work... again.
I'll definitely make adjustments to Easy Mode at least! It's meant to be a fairly casual difficulty, so people not being able to clear it is bad; it probably needs to be easier.
One quick tip that I could maybe offer to help you overcome the difficulty, is to remember your Defensive Special! (V key on the keyboard) A lot of Bullet Hell games have a limited amount of "Bombs" that you have to use carefully, but in Maiden & Spell your "Bomb" is on a short cooldown! There isn't any penalty to using it (in fact, sometimes it can even do more damage), so you can use it whenever you're in danger.
(Also, small clarification, the "squares don't recover in Hard Mode" is only between rounds within a stage. They still recover from stage to stage. I'm not THAT sadistic :) )
I'll try to take Easy difficulty down a notch in an update! And thanks for playing!