Knowing the criticism that TPD went through a little over 5 years ago involving 2 other child murder cases (not insinuating Isabel's case is a murder case), I completely understand what and why they are doing what they are doing.
In February 2007 a manager at a storage facility unlocked a storage locker to clear it out, due to a client's non-payment. The locker contained a Rubbermaid tub with a foul odor. The manager threw it in the dumpster, although she was disturbed by the odor. The next day, she called police and they came and pulled the tub. Inside the tub was a duffelbag containing the remains of 3 year old Ariana Payne. They soon found out that Ariana had a sibling, 4 year old Tyler Payne whose whereabouts were unknown. By the time they identified her, the trash had already been dumped. Had they secured the dumpster when they found Ariana, it's possible they may have found Tyler as well. They were widely criticized for these mistakes. Unfortunately, it is believed that Tyler is somewhere in the Los Reales Landfill. Their father was tried and convicted in their case, currently on death row. His girlfriend (not the mother) pled guilty to 2nd degree murder and is serving 20 years.
So, I think TPD is working very hard to make sure they do everything the way they should. I have the uptmost respect for them and their efforts.