How long had she been setting before you gave her the chicks?Ah yes, that's human door lol.
Should I just open brooder door and let her come out in her own time? She's been in there since....Sunday I believe. She gets up to eat and drink in there but then immediately goes back to nesting mode. Will she stop wanting to sit soon?
Was she setting in the brooder or....?
How is the transition between coop doors and run?
If there are steps or a ramp she may not be able to get the chicks back into the 'safe place'(brooder).
I'd wait a full week from the time you gave her the chicks.
She should take care of them for at least 4 weeks, could be longer until she 'weans' them.
Guessing you've never had a broody before?
This is a great thread for reference and to ask questions.
It's a long one but just start reading the first few pages, then browse thru some more at random. https://www.backyardchickens.com/threads/broody-hen-thread.496101/