There are various different causes for rapid breathing and rapid heart rate which may be caused by stress, poisoning, infections, anaemia, heart disease among many other conditions; if there are behavioural changes like hiding there may be fear or another similar component. Without examining Wagamama I cannot say whether or not there is a cause for concern or not, but you should have your Veterinarian check her over to be on the safe side. Regards Dr Callum Turner DVM
Rapid breathing (tachypnea) is a respiratory disorder characterised by abnormal breathing that is rapid and shallow. It is caused by a reduced level of oxygen, mechanical disorders (where the lungs aren’t able to expand as they should, usually due to a build-up of fluid in or around the lungs), and physiological disorders in which the cat’s respiratory centre in the brain is over stimulated.