Yes, normally I would wholeheartedly agree and I'm not sure if you're here or not but the weather has been beautiful, much lower humidity than normal, breezy, everyone's doing outdoor things before the humidity comes back. Also, she had an umbrella to block the sun.
In the list of who was texting who and who was calling who I didn't see a text or call come in from HA's number to DB UNLESS the text ZL sent earlier to NB was really HA on ZL's phone. Maybe she became suspicious and that's why she texted ZL back in a language they would understand but HA wouldn't. She got no answer, she called no answer, called again no answer and started to worry and decided to go over there.
I don't know that that's what happened but it seems possible. Why would she have texted him in their native language? Anyway this is all JMO, MOO. Could be something else entirely happened.