Taxes for Estate

My mom passed in 2021.

She was retired, elderly and owned a 2 family home.

Normally I would file her taxes because she had a small amount of rental income.

Since she passed in May of 2021 I wanted to understand how to file her taxes.

I did create an estate in my moms name but since alot of the assets were also in my name only a small amount actually fell into the estate, ie HOUSE.

 

Do I file her taxes as normal and declare her as having passed?

Do I file some special form for the Estate or is that handled in 2022 when the estate is settled?

We sold her home but in February of 2022 so that would be reported in next years taxes I assume, correct?

I am the executor of the estate and the sole inheritor of all assets.

 

Is there anything I am missing tax wise for 2021?