Leila trying to sell stuff might not be drug related, these are hard times for everybody. We don't know if she was working and how she was supporting herself and her son, but it's probably safe to assume that she was most likely going through some financial hardships as of late and there's no shame in that, many of us were hit by COVID-19 HARD. Now, it does appear that Leila had some issues/problems related to drugs, she has drug charges and her family sort of alludes to that. This could be directly or indirectly related to drugs, or maybe it has nothing to do with it. I just don't understand how she would just leave and go to Florida with her 2-year-old son without telling anyone. No family members or friends came out to say "oh yeah, Leila told me she was going to Florida". Not one single person.
Now, if her phone is still on, LE should be able to ping it and find the general location of it. If it's still on, it might be a good sign, meaning that she charged it not too long ago. But there's the possibility that someone could have her phone. The last known contact via Facebook Messenger might have not been her at all. Sending a "thumbs up" is hardly a proof of anything. I'm leaning torwards someone else has her phone.