If this episode aired on a Thursday night then the date should be May 3, 1990.
German episode title: "Angelas Rückkehr", meaning "Angela's Return".
After she went against her doctor's advice, Jane Wyman (Angela) returns to the show. In this episode, Lance and Pilar wanted to pay a visit to his grandmother Angela in the hospital, however, he & Pilar had received word that Angela had woke up from her coma, therefore, she disappeared from the hospital and returned home.
Chao-Li Chi joins the regular cast again.