I urge all learners to practice, at least, a minimum level of common courtesy when posting their thread requesting forhelp. A "please" and "thanks" will go a long way.
For your questions:
Present passive tense Present active tense
"She is being seen by the doctor now" = The doctor is tending her. At this very moment, now.
Future passive tense Present active
"She will be sent home afterwards." = If she has no serious problem, the doctor will send her home"
I don't consider them mixed tense; rather, mixed conditions.