TL;DR: Low-quality female housemate is trying to make moves onto me, how to deal with it short-term? Moving out is not an option for either of us.

My family and myself live overseas (not in our home country). We own a house back home that is usually vacant. Last year, a close relative of the family (my cousin) has moved-in for a shorter commute. Last month, I am back in my country to take care of some personal business for a few months, so I am basically housemates with my cousin. She is in her late 20s (hitting the wall hard), unmarried (probably never had a relationship), lazy, fat, and working the same minimum wage job since out of college. I am in my early 20s with the KISS redpill lifestyle: gym, homecooked nutritious meals, high SMV GF, etc.

Recently, I began noticing some 'thirst' from said roomate/cousin, she is, afterall, hitting the wall: glances here or there, tickets to movies/events, and overall an encroachment into my frame: joining me to cook, exercise, et. It is really starting to creep me out. I mean we are first cousins, and she has very little self-care, and not very pretty to look at. She gives off a very strong 'crazy cat lady' vibe if you know what I am mean. Because of the close-ties between our families, asking her to move out is not an option.

What should I do in this situation to reduce creepiness without making things any weirder. I still have to stay here for a few more months.