How does Safana's Charm ability compare to the spell & to Algernon's Cloak?

I'm currently playing a duo run with a CHARNAME Jester and Safana and was wondering how her innate Charm ability compares to the spell and to Algernon's Cloak, in terms of how easy or not it is to save versus it, and how long it lasts.
I'm really glad Algernon's Cloak got fixed to a once a day use, no I don't feel cheesy about using it, but was wondering if it was better or worse than Safana's ability?
I'm really glad Algernon's Cloak got fixed to a once a day use, no I don't feel cheesy about using it, but was wondering if it was better or worse than Safana's ability?
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EDIT: also does a charmed creature *always* turn hostile once the effect wears off?
Algernon's Cloak is CLCK08.ITM, but I couldn't find any seperate entry for the effect itself
When I look at the flags, a lot of the fields say "unkown", but there is one field called "Turn hostile afterwards", which is checked off for Safana's ability, but not for the cloak.