「この際、長男でもいいか…」
= Kono sai, chounan demo iika….
= “I can’t be so choosy now so I could compromise and marry an oldest son…“
えんりょ（する）= Enryo (suru)
「マギーの家に行くけれども一緒に行く？ 」
= Maggie no ie ni iku keredomo issho ni iku?
= I’m going to Maggie’s house. Do you wanna come with me?
Cookie : 「ちょっと遠慮しておくよ。」
= Chotto enryo shite okuyo.
= Well, I’d rather not.