I looked up the official Grand Slam rule on a bleeding injury:

"If a player is bleeding, the Chair Umpire must stop play as soon as possible, and the Sports Physiotherapist must be called to the court by the Chair Umpire for evaluation and treatment. The Sports Physiotherapist, in conjunction with the Tournament Doctor if appropriate, will evaluate the source of the bleeding, and will request a Medical Time-Out for treatment if necessary.
If requested by the Sports Physiotherapist and/or Tournament Doctor, the Referee in consultation with the Grand Slam Supervisor or Chair Umpire may allow up to a total of five (5) minutes to assure control of the bleeding.
If blood has spilled onto the court or its immediate vicinity, play must not resume until the blood spill has been cleaned appropriately."

Leylah needed to have been a bit calmer and more philosophical about it. After all, the interruption disrupted the flow of both players equally, there was clearly no jiggerypokery going on and the correct procedure was being followed.