Agree! No need specially mentioned unless yr girl relies on yr ex-maid a lot. Normally kids don't have good memory. If yr new maid is better than the ex, yr girl will easily forget her!
i didn't mention to my son (nearly 2 years old) before my ex-maid was leaving back in nov bor... but I tried to take care of my son by myself more often and eventually cut down the time he spent with the maid weeks before her last day.
on her last day, my son witnessed my ex-maid carried all the stuffs and leave our home (we have fair relationship..so, I don't mind to let them wave goodbye) After she left, we told our son that the maid's parents missed her ar.. so she needed to go home and live with her parents.. just like he lives with baba & mama lor.....
my son actually took it quite well bor.. he didn't mention the ex-maid thereafter (but doesn't mean he forgot her bor.. when he saw her in some photos.. he still can call out her name)... and when my new maid arrived a week later.. he went to look for the new one the next day already lu.
But of course it depends whether your bb is very attached to the maid or not la... usually when we are home, we will take care of my son.. so, I guess my son feels ok & secured as long as we are here with him....