No power on front passenger door

Look at the end of the dash and between the drivers side door for a second fuse panel. I think everything you mention works on one data bus. You can remove the button pad on the drivers door. Since it gets used all th3 time i# might have gone bad messing up the works.

From where , any switch ? driver door switch or either passenger door switch . This is a very complex system controlled by modules (microprocessors)
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The driver door switch assembly (DDSA)

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The driver door module (DDM)

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The passenger door module (PDM)

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The rear door module (RDM)

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The LH front power door lock switch

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The RH front power door lock switch

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The LH front door lock actuator

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The RH front door lock actuator

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The LH rear door lock actuator

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The RH rear door lock actuator

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The remote control door lock receiver (RCDLR)

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The power door serial data circuit

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The class 2 serial data circuit

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The DRVMDL Fuse - 10 amp

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The PDM Fuse - 10 amp

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The RRINMDL Fuse - 10 a
Class 2 and Power Door Serial Data Links
The class 2 and power door data circuits are both serial data links. The serial data circuits replace cables in the vehicle by multiplexing (time-sharing) data to and from each device over a single wire referenced to ground. If the power door serial data is lost, both the rear door module (RDM) and the passenger door module (PDM) enters the sleep mode. With the RDM and the PDM in sleep mode, no power door operations are possible.
Your best bet is to take it to the dealer or an ASE certified repair shop .

Beings as everything that stopped working is on the passenger side, I'd think some wiring got disconnected or broken.

it sounds like a broken wire in the passenger door.

Check the wires & fuses but it's most likely the master window switch. This is the one at the drivers door.

check releys and wires in door jam 1 might be broken failing that u need a new switch

Well, technically you dont have to remove the door panel to remove the outside door mirror. At the top of the door panel, at the front of the door, there is a triangle shaped plastic cover. It's held in place with push clips, so pull that cover off and remove the foam insulation and you'll be able to access the 3 nuts that hold the mirror to the door. The only potential problem could be in unplugging the wiring harness. I use a hooked pick to pull up the harness to unplug it.

There is a screw behind the lock rod. Lift door panel straight up to remove

yes it does sound like that is your problem. try checking for used one.