So you asked the Sosua lawyer for a break on US$1,300 Gringo price for incorporation, and now you are worried you may have offended her? Don't take this the wrong way please: Don't be ridiculous!
(P.S. The Sosua lawyer will not be offended, maybe will even respect you more)
In any case, if the Sosua lawyer does not give you a price break from the quoted US$1,300 tag AND you want somebody to do it, just use company24h.com I think it is US$775.