H1 Approved but H4 still pending

[Sunny_WA]

I have filed for extension in Dec 2018 and got an RFE. Responded to that RFE in March 2019 and since it was taking long filed for Premium processing in June end. This got approved in first week of July. But my wife's H4 VISA is still in pending status and the case status shows as "In December 26, 2018, we received your Form I-539, Application To Extend/Change Non-immigrant Status, Receipt Number ...". The issue is by this week end our 240 days will expire and not sure if H4 will be out of status and should my wife need to leave US? Really appreciate if someone can help me on this?
Thanks,
Sunny