Hi Valerie, All DNA test information must go on the actual test participant's profile. If Sinai Quick was the actual test participant, meaning her autosomal DNA cells were used for the test, then, yes you can add to her profile. If she was not the test participant, you can not add this information to her profile.
Instead, you should add the test to the participant's profile and check that the connections to Sinai's profile have been made. WikiTree will add the appropriate notation on her profile based on the information on her descendant's profile. If the test participant is not a descendant of Sinai, then the notation will not be added to her profile.