Thanks for placing your query through HCM.
I can appreciate your concerns.
It seems she has developed pus collection near tooth root.
Clearly, she is not responding to oral amoxycillin
You should take her to dentist
who can drain the pus & prescribe better antibiotics.
Foracort puffs can be continued.
Hope I have answered your query.
If you have any further questions I will be happy to help.
Wish her a speedy recovery.