I think a mom, sister, girlfriend, buddy is suspicious of someone but is either in denial or in protection mode. We've seen that in other cases, regardless of whether the community in general is reluctant to deal with LE.
Did someone come home with scratches after Hania went missing? Did someone appear at a time or location he wouldn't normally be that morning? Did someone miss work that day? Did someone in the area change morning routines?
There is a chance this perp could strike again....very important to call in a tip to save someone else.
jmo