Can i extend my visa after finish my grace period...

Now you can extend your wife's visit visa without leaving the UAE, where those who wish to extend entry permits until the visitor in cases of visit and tourism submits a request for extension through the sponsor through whom the visa was issued, and visit visas of all kinds, whether for visit or tourism, are extended for a period of 30 days and only twice Regardless of the main duration of the original visa. The prescribed fees for extending entry permits, which amount to 600 dirhams for each extension
The tourist or visit visa is extended by requesting an extension 30 days before the expiry of his visa so that she can benefit from the extension decision, as she will not be able to obtain an extension if she exceeds this period, and she will be obligated to leave the country and return with a new visa.