Bedtime has become such a f*ing nightmare

My girl turned 2 in June. We’ve always coslept (single mom so it just works out better for both of us). But good god once you finally get a routine down, they change everything up on you.

I started noticing she seemed to be afraid of the dark/shadows a few weeks ago. I have to cover all forms of light so the room because any semblance of light or shadows on the walls scares her. Easy fix, no problem
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But the last three nights are something different. She only goes to sleep by screaming herself to sleep. I’ve asked her everything under the sun: are you hungry, thirsty, hot, cold, scared, sad? Answer to everything is no. She wants to mess around and play for 20 minutes in the bed and then will only shut down after a 20 minute screaming session after playtime. Then she wakes up multiple times in the night screaming her head off.

I’m losing my mind. She’s always been a good sleeper. Idk if this even makes enough sense to ask for advice or I just need to vent.