I'd leave her alone right now. She may be gaping because of the oil.Update: She laid a soft-shelled egg and after that seemed to feel better - started eating again anyway. Her crop still feels full (I gave her some olive oil and massaged it) and now she is gaping her mouth open. Should I keep massaging and not let her eat any more?
Let her eat. Stop her at bedtime and in the morning check her again.