There is a very real, and objective, "acid" test to be considered in this matter: police involvement. Whether or not the police were brought into this matter can provide very reliable insight as to what certain persons or entities considered. In most situation, more reliable evidence can be found in what actions a person took as the events unfolded in contrast to what the person said afterwards.
(Isn't this concept engrained in our A,B,C's of Life -- "Actions speak louder than words".)
Assuming that drugs were introduced into someone's drink, a very serious threat to public safety
existed which demanded full investigation by the police. (IMHO, whether a husband properly tended to his wife's welfare is a matter largely between the two of them. However, the issue of persons drugging others in bars is a matter in which we all have a stake.) I submit that more than one person had a very real interest in seeing that the police were brought into this matter if they had reason to believe that a drugging incident had occurred -- the husband to avenge the assault on his wife, the room owner to protect his patrons and his business, and the medical providers to fulfill their statutory obligation to report assaults.
So, what was it? Did anyone call the cops?