Hi,thank you for posting your query on health care magic.
I have gone through your query and can understand your concern.
Looking at the symptoms,your mother is probably suffering from Allergy of the
respiratory tract.
Yes,she may continue with Tablet Montek,it will help against the Allergy.
For
Nasal Congestion,she may find relief by taking Oral decongestant like
Pseudoephedrine and Nasal Decongestant like
Oxymetazoline.
If the Allergy problem is for a longer time,then Nasal Steroid Spray like Mometasone Furoate will also help her.
For wheezing and cough problem ,she may find relief by taking Cough expectorant like Ambroxol with
Bronchodilator like Salbutamol.
Avoidance of substances causing Allergic problem is necessary.
Hope this answers your question.Take care.