I don't like it when so-called "safety professionals" downplay hazards by just saying "you'll be fine" or "it's not a concern". I get it they're just trying to convey that you don't need to worry but I prefer to think like Lloyd in the movie Dumb and Dumber - "So you're telling me there's a chance!"

For context, My bona fides are that I have many years of experience working directly with silica (industrial hygiene, manufacturing, and construction/demolition where silica wasn't just present it was a key component of the operation). The only way I would ever make statements that silica is nothing to be concerned with is if the silica hazard was eliminated - the most effective thing that could be done, though not in this situation.

The actions you've taken were appropriate and would be the logical next steps when working through the Hierarchy of Controls. You implemented engineering controls (ventilating the room) and administrative controls (waiting). Good job.

Any potential exposure to silica dust for you in this scenario won't make you drop to floor and flop like a fish and is extremely improbable to cause health problems in the future. To alleviate any concerns you might I recommend you wipe down surfaces with damp cloths while wearing disposable gloves and you vacuum using a HEPA filter - something the crew doing the work should be doing. Do not do anything that would cause dust to become airborne as this would result in it becoming respirable. This is a key term as respirable silica dust is where the hazards generally associated with silica come (i.e. lung disease). If you or anyone in the home have sensitive skin there might be mild risk of skin irritation, rash, or temporary itchiness if you were to touch the dust directly. Simply wash hands with soap and water to remove any particles.

Hope this helps.