if their marriage is over and he helps her get ILR then they will be obtaining it by deception, and it could be revoked, thou it would be difficult to prove if they were still living together, and people have done this in the past..
all comes down to whether it is money problems he wants her to go back to the phils or does he want to end the marriage? I suppose you need to find out the real reason why he wants you to go to the phils allyn, and then decide your next step ..