Ceiling water stains

[Karen Bickford]

Hello looking for some feedback from knowledgeable rehabber.

We were cleaning a home and my cleaner broke the shower head. Subsequently some water leaked down to the kitchen ceiling. She sent me pics of water stains that were less than 6 hours old. While I agree we caused a leak in the ceiling from the broken pipe the stains look very old to me.

How long does it take a water stain to turn orange? Less than 12 hours ?

She did say she has had leaks in the past from her son not closing the shower curtain and seeping through the bathroom floor.