Lyla Grunt

Lyla Grunt is the deceased wife of General Buzz Grunt and mother of Tank, Ripp and Buck Grunt. She and General Buzz divorced and Lyla moved out. Lyla's grave can now be found in Olive Specter's garden in Strangetown and her ghost shows she died of electrocution. Strangely, the family she left behind has no memories of her death or anything else other than her divorce with General Buzz, suggesting that she had abandoned them and never kept in contact. It's not until you move her grave that some of her family finally realizes about her death, planting a memory in them.

Resurrecting Lyla
Use boolprop testingcheatsenabled, then you can make her selectable on the lot. MAKE SURE YOU HAVE LYLA'S TOMBSTONE ON THE LOT! shift click on one of the Sims, and click spawn, then tombstone of L & D. click on that, click Get Family Member, and click Lyla. if it doesn't appear, keep clicking MORE (as in the option) till it does. pause as quick as possible, and make sure its on slowest. Her ghost will fade away FAST! hope i helped!