FL saves ML from being poisoned by sacrificing herself. ML doubted her intentions and imprisoned her. Even after knowing that she was injured badly, he refused to part with his pride and withheld treatment. I simply don't understand his train of thoughts. FL almost died, but luckily she has her medical system which saved her life.
If ML is wise, he would have secretly sent the doctor to treat FL in the prison first without letting anyone know. Afterwhich he can continue to investigate the incident and determine if FL is truly guilty as charged.
FL (and I) definitely lost trust in ML for abandoning her when she needed help most.
a reincarnated? Soul, this needs more clarification. Atm I'm pretty shocked as I didn't expect the prequel to also have a reincarnated FL like in PGC.