No I don't think.
You ask the question so you are the 1st.
You know X but there is no particular link between you and X, so yes, I think that X is the 7th (others in general). Nevertheless if there is no particular link between both of you, you are not really involved in the question and this could be the problem.
X's partner will be the 1st (the 7th from the 7th)
This is where turning just becomes silly LOL.
What you need to do is have a very clear idea what the question is.
There are several possibilities. The obvious one discussed up to now is whether Y will accompany X on the trip. That's a yes or no question. There are only two possible answers. Yes she will or no she won't accompany him.
The second possible is will she make the trip in December. You might think that this is the same as the previous version but it isn't. In this version there is a possibility she will go, even if X does not travel. That is the two could travel together, X could go on his own, Y could go on her own. In that case, Y takes the first and the quesited is the ninth. Some connection between Lord 1 and Lord 9 will have her travel.
If you think that her travelling is conditional on his travelling (if he doesn't go then she won't go), then turn it into a Yes/No question. Give her going the first and her staying at hoe the seventh and weigh Lord 1 against Lord 7. If Lord 1 is stronger she travels, if Lord 7 is stronger she stays at home Such an approach only works with Yes/No questions. Anything which offers more possibilities or which requires some additional information (Such as where is my lost ring) won't work with this approach.
Which question you choose (and there may be others that I haven't thought of) depends on your knowledge of them and the context.