Get your taxes done using TurboTax

sorry for your loss

each of you reports on form 8949/schedule D the sale proceeds per 1099-S (investment section)

for its tax basis, you each use 1/2 of the  date of death value 

in addition, you are allowed to deduct your share on selling expenses. 

if there is a loss it's only deductible if it was no personal use after she died