I'm going to insist my partner that she should get rid of a kitten she's in love with.
Why would you make her get rid of something she loves?
I want her to be more upset than I am.
It's cruel to force someone to get rid of something they love. They will resent you for an incredibly long time and likely suffer emotionally from being separated from their pet.
It's a family pet and I'm going to take it, pay for an air ticket to fly it to the same place where my last one died.
How would you feel if someone does that to you? If you planning on something like that i'm sure your partner will leave you for good. You should leave her alone with her pet.