Nathalia was told by an angel on the 17th of July 2015 that: 

"There's only a few Months left"

Why did the angel say this? 

And from when was the angel counting off these Months?

I believe he was counting off Daniel's seven weeks of 49 Years of 360 Days! This count began on the 28th of June 1967 when Israel issued a decree for the restoring and rebuilding Israel, including Jerusalem. 

"So you are to know and discern that from the issuing of a decree to restore and rebuild Jerusalem until Messiah the Prince there will be seven weeks [that is, 49 Years]..." [Dan.9:25][NASB]

49 Years of 360 Days = 17,640. 

17,640 divide by 30 = 588 Prophetic Months.

By the time Nathalia had this dream on the 17th of July 2015, 585 Prophetic Months or 17,550 Days had already past. There was still, at this point, another 90 Days or 3 Months before the expiration of Daniel's seven weeks. Daniel's seven weeks expired on the 14th of October 2015. 

The 360-Day Prophetic Year of the Messiah began on the 15th of October 2015. We should be expecting the Messiah to come for us on First-fruits on the 7th of May 2016. This will be 6 prophetic Months and 26 Days into the Year of the Messiah!

We can now see that on the 17th of July 2015, the angel had counted off 585 prophetic Months. And that there was then only 9 prophetic Months and 26 Days left before the coming of the Messiah.

As as the time of writing this [28/1/16] we're now down to 3 prophetic Months and 11 Days!!!

The Day of the Messiah is fast approaching!

"And this is my prayer: that your love may more and more overflow in fullness of knowledge and depth of discernment, so that you will be able to determine what is best and thus be pure and without blame for the Day of the Messiahfilled with the fruit of righteousness that comes through Yeshua the Messiah..." [Phili.1:9-11]