Bro, generally the Filipinos are supposed to be the more dominant LBs; they tend to go on hormones less and shouldn't have a problem getting it up.
But this LB, Marcia, could be promising as she's older and maybe be able to give variety to the act. I would give it a shot if she said $100 to maybe $150 max per hour. The best is, give her a call and ask what she provides.
A fair number of LBs in Singapore claim to be dominant but I doubt they give the whip and all!