You'd be a
very level-headed sister.
My sister to me (and everyone she meets for 1 month): "What on-earth were you thinking? Seriously? You think that's my style? Take it back and just give me the money."
Me to my sister: "Thank you for your generous present" - sticks it in a draw and brings it out once a year for 4 years when meeting sister alone. Year 5 - gone. When asked where the bag is say "I wore it out".
My sister once gave me a Birkin looky-likey. Non-leather, sangles stitched to the front of the bag with a zip top. Had to pretend I lost it in a house move. Another time she gave me what was a very nice French Connection-does-BV little shoulder bag in woven red suede, strong on the fringing. Too small and girly. See 'me to me sister' above for clues. I wore it 4 times in 5 years and then sold it to concession. Y.5 she asked if she could borrow it

- which is really off coz she hates red apart from lipstick, I had to say I wore it out.
Good luck
@BowieFan1971 !!!!
The problem with friends and family is they know we love bags, the bigger problem is they don't always let us choose.