Just my opinion and hints from reading about (side)effects.
A friend of mine, her Uncle was on Prozac and your sister sounds exactly like he was.
You are exactly right.
Marijuana does exactly the same thing to the brain...it is why they want to legalize it. and because it kills IQ points-—esp. when children use it.
(memory/prefrontal cortex...removes self-awareness (the Seat of the Soul).....exactly what the Satanists and the Marxist want to destroy. They have been trying to “Kill God” for 150 years. If they can’t do it by operant conditioning in the schools (which works on most)——they will do it with drugs or other means on the homeschoolers.
go to 31 min. The whole thing is interesting though.
https://www.youtube.com/watch?v=W_i2mC5fAmI
Is your sister bipolar? SSRI medicines can flip a biplar from depression into mania, and manics lose their sense of shame etc.
not a problem for ordinary folks.