Yes, as she is Filipino, she can get an ADDED 30 day extension of stay at your local Thai Immigration office...
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A TM30 address registration will need to be filed with the Thai Immigration office.
Here's the common found requirements for the 30 days extension... Suggest you 🚫 NOT wait til her current expiration date ends as the extension is ADDED.
Are you staying in a hotel?
If you are, then the hotel should file with Thai Immigration the TM30 address registration form. Ask them for a screenshot of their filing.