As Jd said make sure the paperwork is in order so that it will make things easier for you legally.

Keep your T appt and keep yourself healthy.

One thing you can look into is a progam that allows you to hire people to handle all the mess of getting her home ready to sell and how to remove your brother from the home.. Sounds cold maybe ? But I know someone who did this and it took most all the stress off of her. All she did was walk through the home and decide what she wanted to keep and a crew comes in and cleans the home and then its able to be placed on the market for sale.. Not sure what it cost her but she said it was worth every dime.

Good luck Im sorry your having to deal with all this .