Aisha: As per the rules and regulations, if your dad is going on final exit, your mom's residency permit will also get cancelled before he leaves which means all of you will have to exit Qatar before he exits. On the other hand, if he leave say right now on "vacation" and does not come back, you will have to leave Qatar before the expiry of your RP. Otherwise, I guess you will face a penalty for each extra day of stay in Doha. The matter needs to sorted out within your own family.
Molten: As usual your "advice" of offering the papa a tour of Australia or Canada is a "great" one. You are back after a long silence with your "STUPID" suggestions.