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Hold up. We gotta talk for a minute before you do this.

First off, don't snort MDMA. MDMA is a relatively short acting drug that you can't use frequently, so you don't want to do anything like snorting it that's going to shorten its duration. Also, it's very painful to snort and the drip tastes horrible. Take it orally instead.

Which brings us to dosing. A "line" isn't a quantity. MDMA is a very dose sensitive drug. If you take too little, you get only its side effects and none of its benefits. If you take too much, your experience isn't much better (sometimes it's actually worse), but it's neurotoxic. Weigh out a proper dose using a milligram scale.

I'm sorry but she does not know who makes it, but more importantly, you don't either. Test this substance with reagents to make sure it's really MDMA.

It kinda feels to me like you haven't done any research on this. A Redditor I respect very much promotes a rule of thumb that you should spend at least an hour reading about a new drug before taking it for the first time. We have resources collected in our pinned post and sidebar, there's also Erowid and Psychonaut Wiki. Please spend some time learning about safe use and harm reduction before using any drug, including MDMA.