Bayombong Bishop Ramon Villena, meanwhile, urged the government to ensure justice for La Puebla, 26, a native of this landlocked province.
Villena described La Pueblas killing as "very inhuman" and "beyond comprehension." Her body was dismembered.
Dante Jimenez, VACC chairman, said they are now working on the creation of Task Force La Puebla-Aguilar in anticipation of the full-blown trial of Aguilar.
Jimenez and Lauro Vizconde, also one of the VACC founding members, attended the burial of La Puebla in her late fathers hometown of Bagabag last Saturday.
Jimenez was among those who fetched La Pueblas remains from Singapore.
"We will be there (in Singapore) for Jane and Guen. We will see to it that there will be no miscarriage of justice," he said.
Jimenez said the task force will monitor the trial and if necessary, will extend legal assistance to the concerned parties.
"We want to (give assurances) that the interests of both parties (La Pueblas and Aguilars families) would get fair and equal attention," he said.
The murder suspect, Aguilar, 29, a mother of two, hails from Tagudin, Ilocos Sur.
Local human rights lawyer Ernesto Salunat said he would join Jimenez and other VACC officials in going to Singapore sometime next week to observe the ongoing investigation in the La Puebla case.
Earlier, Salunat, a former Northern Luzon governor of the Integrated Bar of the Philippines, said he was willing to act as the legal counsel of La Pueblas family in the murder case.