Hi there.
It is very hard to ascertain the cause of these sensations without the benefit of an actual physical or neurologic examination. These sensations can really just be due to stress, however, some may be linked to underlying common disorders such as hypertension or problems with metabolism such as diabetes mellitus. If the problem is persistent and is associated with other symptoms, then it is best that you take her to her doctor so that she can be assessed properly.
For now, stay as stress-free as possible. Regards and God bless.