I don't blame your sister for wanting one, i did and eventually got one. Not being sexist here, but they are ideal for a lady hunter, nice size to control, and to carry back to the motor if anything happens. Plus i presume she wants one to be a companion dog also...again i could not ask for better in that department, funny, affectionate and intelligent, never boring, and don't take up much room.
Mine shivers in the cold if stood about, but when working, it never bothers him. He has seen a fair amount of work and has NEVER had an injury, i wonder why people think they would, the light frame me