When should I take my children to meet half sibling?

I have a 2 year old and 4 month old. They have a half sibling who just turned one month. The mother wants our children to meet now but I assumed we would let them meet when they’re a little bit older and could at least crawl and interact.. me and her don’t talk because I find she’s sort of into drama and I don’t do drama so I’ve kept my distance.. what do you all think?