It's quite hard to figure out who will make the perfect wife for Remi. Both of them love Remi.
Jane is willing to get out of the comfort zone and dress like the women in Remi's village. She asks Remi to take her to his village. Remi tells her that she doesn't know the ways of his people. She says she will learn from the women in his village. This is a form of sacrifice that's required of love.
Thoni is loyal. She has refused to be married by any man or be impregnated. She will wait for Remi even if it'll take 20 years. This is a form of love expressed by being faithful.
Both of them will make a perfect wife for Remi because they possess two factors that determine one's love for another - sacrifice and loyalty (faithfulness).