Help me out !

Hi friends so i recently found like in my daughters hair i found dead nits & about 2 nits alive & no louce but long story short she also got them back In October of 2024 i cleaned her whole head in 2 days & checked her every single day after school for about 4-5 months & she didn’t have nothing at all but then i stopped checking her because i was going through stuff & it wasnt until yesterday i said hmmm let me check her because i had checked her in a while & i found the nits but no louce at all . What can i do to prevent it from happening again & what are other things i should be doing ? 😭