You can rest easy for now.
Ocasio-Cortez has said she will back Nancy Pelosi for Speaker of the House.
As it happens the Dems just voted to nominate Nancy Pelosi as Speaker of the House when they seat the new crowd next year. The vote was 203 - 32. Pelosi needs 218 votes to become speaker so she needs to find 15 votes between now and when the new House gets seated. So it seems the insurgent part of the Democrats is not being lead by Ocasio-Cortez. I have no doubt she will find those votes. She will spread around a few promises and be good to go most likely.
Personally I think putting Pelosi back as Speaker is a mistake. I’d be open to other suggestions (and of course not O-C) but not Pelosi. Debate for another thread though.