Thank you so much for your replies!
Babydom I do not see them as strangers either as I interact with them daily. The issue is the clients I already have don't want me to allow new clients during daycare hours because they don't know them. I did offer for the parents to meet but my current client said even if she were to meet she still doesn't know them well enough to be comfortable will "strangers" (I am quoting her lol) around her child. I respect that and understand it but I just don't know what other options to give this other family. I totally agree with kids not acting the same. I had one DCB here a little later then usual which is why the interview overlapped in the first place, so the new clients did get to see a little more and the whole time he was hiding behind me lol