May be due to weakness probably cns cause

It cannot be said it is hundred percent due to covid..mostly weakness remains for 1 month or two.. But rule out any brain related cause

It's  may be vertigo ? Contact for further evaluation

Kindly share a more elaborate history like: 1. Does she had dizziness even at rest also 2. Does she had dizziness even changing posture in bed 3. Does it constant through out the day 4. Due to weakness post covid dizziness can be a cause 5. Are u monitoring the bp may be her medication are not appropriate causing hypotension. Common causes are BPPV can be easily controlled with lifestyle modification and supplements by medication