Why do some characters have memories?

We already know Ines has memories because she committed suicide. We know this is most likely the case because she committed suicide twice and both times she regressed 10 years with memories. Then why do some characters have memories and some don’t? There is only one other way to get memories and it will be explained in Bilbao in the cathedral of the archbishop. However, it means that other characters either committed suicide and it hasn’t been revealed yet or they gained memories through the other method. Carcel is the only anomaly because it’s a fact that he didn’t have memories so he falls outside the criteria for memories.

Another thing, God did not make Ines suffer. Ines suffered because of her choices. Later it will be revealed that her suffering is partly because of the other method and the Apostle even encouraged her to think differently and she said she will bear the consequences. The Apostle even tried another way to overrule her stance but it didn’t work. Human beings have the freedom to obey or disobey.That’s their freewill. Ines always chooses her own way and Ines never ever blames anyone else for her suffering. She knows she chose a bastard that ruined her life then a random stranger (ch 94) whom she blames herself for ruining. She doesn’t blame Anastasio or God in any way because all of her choices were her own.