Hi, welcome to justanswer , I am really sorry to hear about your wife situation .
I understand her situation and that she feels worried and concerned . However , at this time , the best thing and the most proper thing to do is for her to contact a doctor immediately.
Staying in the house will not solve anything at this point and will be extremely risky and dangerous .
However , it is not normal that she experiences pneumonia once and once again .
When this happens ,specially with an atypical microorganism like Mycoplasma ,is because the patient has a weakened immune system that is not working properly .
Immune deficiency disorders could be caused by :
1- A decreased white blood cell count ( including neutrophils, basophils, macrophages
,lymphocytes B or T )
2-Complement or Antibody
3- Nutritional Deficiencies
4-Inadequate Protein consumption
6-If she has a medical condition that has been treated with corticosteroids or chemotherapy . which are treatments that affect the immune system ability to combat infections.
infections like HIV virus
It is important that you take her to the emergency so she can receive antibiotics immediately .
At the same time, You have to talk with her doctors so She can be further investigated ,even refer to an Immunologist Specialist if it is necessary .
It is important to determine if she has an Immune Deficiency and that she receives the proper treatment to manage that underlying condition ,to stop this cycle of recurrent infections .
If you have any doubts or additional questions , just ask me , I am here to help you.
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