OK, so for all of my cousins I've stitched wedding samplers of some sort as a wedding gift. This summer another cousin is getting married, but it's her fiance's second marriage, and he has children from his first marriage. I want to acknowledge the kids as well, so I was considering altering a family sampler I found to read:

[their last name]
[her name + his name]
United in Marriage
[date of wedding]
Our Family
[childrens' names]

Is this appropriate? My cousin does already treat these (fairly young) children as her own, they have rooms at her house and they do things as a family all the time, including formal portraits and vacations.

I guess my biggest concern is that I don't want it to look like they're her biological children (I won't be putting in birth dates as the sampler originally showed) and I also don't want the children to feel like it "negates" their original family and their birth mother (totally not finding the right words here...I hope I'm making sense.) But I also feel like my cousin is not just getting married, but creating a new family, and that should be acknowledged.

Opinions?
Sarah