valentina couldn't carry baby not because she is unfertile, it's because of misscarriage, that's why then Luiza who carried baby (Leo). i think why valentina got misscarriage because she had mental issue (with her mom) that influenced her pregnancy health.

Hi, did you see 'Lonely Girls' it's a cute K-drama there's 2 episodes for now Oh and I really like 'SHE' too the end was not expected at all😲