Badly need advise, my neigbor used my name

Hello Atty.,
Newbie po ako dito
Nagpanggap po yung kapitbahay ko na ako para maisanla yung lupa ko ksabsawat yung sister ko bilang co maker at may isa pang tao nakuha po nila yung original title at naisanla worth 150,000k. Tatlong tao yung nakinabang sa pera nag file po yung nanay ko ng affidavit of lost title Nag pa SPA po ako for my nanay wla po ako sa Pilipinas.
Nag file po na case yung pinagsanlaan against my mother na hindi raw po nawawala yung title at nsa kanya isinanla ko raw po w/c is yung kapit bahay ko ang nag panggap na ako.
Nung time po na naisanla yung lupa naglayas yung sister ko for 6 months pag balik buntis medyo complikado po kz yung nanay ko is much affected if mag file ako ng kaso against sa kapit bahay ko kz damay po yung kapatid ko.

May nakuha po kaming evidence like id using my name with picture of my neighbor at yung sanglaang naganap with sign ni kapit bahay.

Ano po yung pinaka best action pls need advise.
Ps: my sister is in legal age 21
Thank you

Ano po ang pwedeng isampang kaso laban sa kapit bahay ko sobra pong na stress ang mother ko co'z every day niya nakikita yung thick face na kapit bahay knowing na alam nya pala ang reason kung baket nag layas yung sister ko.

Ano po ang pwedeng maging kaso ng kapatid ko?
Medyo matagal po ba ang proseso against my neighbor?
Salamat in advance.

what documents were executed? a deed of mortgage? was the title annotated? your signature was forged?

i recommend you file civil case for return of the title and nullification of the mortgage if there is one.

unfortunately, you cannot prevent the mortgagee from filing a criminal case of estafa against your sister if you move against them.