I tie about 18" stings to the ceiling studs making a loop. Then put one side of prop thru and the the other and let them hand on the prop up against prop shaft. You can hang alot of planes that way. If i don't have the motor installed i use the landing gear. You will discover a way that suits you and her. But agree if she is saying things now, if you marry it will be 10 fold
Make sure your string is heavy duty and will not come loose or it will hurt your little planes badly. Not made to be dropped 5ft. onto the rudder. Dropped one thank goodness it was already in ICU care.