Regarding Covid. Properly. shall be!

Mother tested positive on 27 April with CT Value 20-21. She didn't face breathlessness anytime but initially her oxygen level was 92 -93 and doctor advised her to remain in home isolation. After 10 days of medication she is well and oxygen level increased to 95-96. Then on 6 may she had ct scan value 10-11 and on 14 she again tested positive with rtpcr ct value 16. This means the viral load has increased and we became worried. On 18 may one more ct scan done and shows same value10-11 with insignificant resolution. Now we moniter her oxygen level many times in day and maximum times it remain mostly 97-98 expect sometimes 96. As doctors says virus has become inactive. So is there chance that it may again get active. After 14 may we didn't do any rt pcr test. Pls comment and suggest. I am uploading the ct scan . In blood test her c reactive protien value3.6 mg/l out of the limit shown  8.2 tested on 19 may.  Pls refer the dates of the whole case properly. Shall be thankful to you