I don't know if the length of a thread here is an indicator of the effort put into locating a loved one that's been missing for thirty years and it feels a little like homework as Texas is so far removed from my radius but a quick glance at Texas's 80s forum shows me that Tanisha Watkins and Gracie Nash were both searched for desperately and are still remembered and loved by their families.
If it's not your area then nevermind, I just asked in case that you might be familiar with some cause after few hours of scrolling and clicking topics I had no luck (but I didn't do it thoroughly yet).
Of course that the lenght of thread is not an indicator of family's involvment and effort put into search but longer topics likely mean more coverage, info, sources, theories etc.
Through my fruitless search for any coverage about Triquika I found few articles mentioning "a lot" or even "epidemy" of Black young women going missing in Dallas and Texas in late '80s.
Wikipedia lists over a douzen newspapers supposedly available in Dallas at the time, popular between Black community and seemingly not digitalized or just not available to check out online.
I just thought that maybe there was some other way those communities were searching for their missing. If mainstream media weren't interested in covering even as much Black missing people as those who were White, even thou there were much more Black people missing...
Well, however shocking of controversial some people thought about "love" and "caring" is, anyone who loves and cares for someone who went missing is either trying to push harder (as you mentioned before) or... attempts to do it in some other way, which seems more available for them.
After all, aren't most people, who are not particularily interested in cases of missing people who were members of minorities just... mostly not involved with any members of those minorities in any way?
Of course that the best option is to make everyone know, everyone aware, cause you never know who may know something, but if that option doesn't seem to be on the table, the second best thing is to try to reach to those who more likely will care.
I can't imagine people knowing that Black Women are going missing in the area, knowing that mainstream media, LE and general population mostly neglects these cases and do nothing. Maybe they were trying to find them and reach to people from their community?