Woken up by the grudge! 😰

Okay, so I am a momma of two. My 7 month old son and I cosleep while my daughter who is 6 sleeps in her own room. I swear this girl never stays in her room she will wake up around 4-5 am and try to sneak in my bedroom to sleep with me. I love my baby girl to death and I want her to feel protected she's in her pjs and messy hair walking to my bed in the dark just always frightens me lol. But gosh One of these days she's going to give me a heart attack! I hate that feeling 😩 also how do I get her to stay in her room? I don't feel safe locking my doors knowing she has her own room