If my grandmother is hospitalized, she says she won't come back home alive and cries about that.
この場合、次のような言い方ができますよ。
ーIf my grandmother is hospitalized, she says she won't come back home alive and cries about that.
「祖母は入院したら、生きて帰って来ないと言って泣きます」
to be hospitalized「入院する」
to come back home alive「生きて家に帰って来る」
ご参考まで!