Is the marriage valid if the Indonesian maid agreed to marry, and promised to issue a marriage contract from her country with the signatures of her father and two witnesses, as well as her own signature, and the questioner is to sign upon her return after having given her the dowry?

We advise you to fear Allah and to stay away from this woman, for Satan strives to beaut beautify the unlawful. As for marrying her, it must be with an offer from her guardian and acceptance from you, and the testimony of witnesses. This cannot be achieved by a paper she writes. So either you travel to her guardian, or you appoint a Muslim man in her country to conduct the marriage contract on your behalf.