Advice Needed: Holiday Package

I've been NC with both parents since June, uBPD mom and narc dad. Sent a therapist guided email in September asking them to please not group text or call together (very enmeshed), talk to me respectfully on the phone, and not use my brother to pass messages. A month and a half later received an email from my dad saying no, I will not talk to you without your mother, you are imagining that we are disrespectful, it was just "friendly banter" that we all find fun, and we don't ask your brother for info (a lie). Then as soon as the email drops I get a text from my mother with a random pic and bags she is putting together for friends (???) like nothing had happened. And a group text from my father that started with "this is a group text." Blocked them both.

Got through Thanksgiving spending it with just my brother, they didn't try to call me (or him, ugh) but yesterday received a box from my mother, written on the bottom is "Happy St. Nicholas Day." For background when we were very little and still at home she gave us wooden shoes that we would put outside the door on St. Nicholas day and in the morning it would be filled with candy. One of the better memories- but I know that THIS is manipulation. And she is feeling it out to see if she can just ignore the boundaries I set and pretend like things are normal.

My first instinct was to send the box back- give the message that I'm done, it's not fine. My husband thinks that might be engaging/ looking for drama though- to me I have them blocked so whatever crazy reaction they have I won't be a part of it- but I thought I would ask y'all for your opinions. Is it better to just throw away the box or send it back?

Thanks in advance!