Leaving to have a baby

My boss is a straight B*** the comments she’s made to me, the way she’s acted since knowing I am pregnant, the work load, everything. She also even takes my tips and I have no way to prove it since their cash and she says it’s because I use “her supplies” and that “it needs to go back into the business.” Anyway I’m leaving to have my baby, was nice enough to even give her a two weeks notice (technically two weeks and two day notice) but ever since I texted her, she won’t look at me and still is rude. Well I don’t want to really ruin the relationship there but kinda wanna be a smart a** and give her a “goodbye” card. Tips? Advice? 😂 I’m not coming back after having my child she just doesn’t know that😂