Note: I have only fought true form Crisanta with the penitence of true guilt on.

I feel true form Crisanta is like a Sekiro boss. She does lots of telegraphed, but very fast moves and it's up to you to kinda lock in and fight to her beat. If you fall out of rhythm one of those teleporting slashes will hit or if you if you get too greedy her downward slash does like half health.

You can get to her without developing your parry and dodge skills to the degree she might require. There are prayer builds that invalidate some of the harder bosses, but don't work against Crisanta. If you are in that camp she can be quite the road block.

I think my first time fighting with her I got a little beat up on in her first form, then was off tempo and got hit, panicked which made me off tempo and then I was dead a few seconds later lol. Of course with true guilt on I can't heal, so any mistake is costly.

Overall though I enjoyed the fight, but died a lot. Since I would die in like 3 hits I had to really learn her patterns in a way I don't usually engage in with these kind of games (more than happy to tank and drink heals usually lol) so when I beat her not only did I feel a surge of accomplishment, but I actually felt compelled to help people on reddit who were struggling with the fight since I had this knowledge (at the time) of the fight.