2 yr old suddenly needing me to sit with her until she falls asleep?

Melani

We just had our second daughter 2 weeks ago so I know this is an adjustment for everyone including my 2 year old. She has always been an amazing sleeper; loves her naps and goes right down at bedtime after her bath and story. But the past couple nights when I put her in her crib she gets really scared and says “sit there” while pointing to the couch in her room. I have been sitting with her because if I leave she screams “mama” at the top of her lungs, bawling her eyes out until I come back. It’s breaking my heart but I can’t sleep with her every night - I have a newborn who needs me too. Any advice Mama’s?