That's not in the game yet, it will be in the new update. If you did the Sera and Cecille content then you're done. Check the devlogs for the last 2 updates to see a run-down of the latest content.
but then is there a reason i can't finish the maid training or is that all there is upto in this update? if not then i can't activate the erin peeking scene without completing the maid scene correct or am i wrong also i'm stuck at 52 affection with her is there a bug maybe or somehow to increase it
The maid has no relationship to Erin, she's like all NPCs, optional content. If you didn't get the Erin peeking scenes and used paths to v0.4.3, you might have skipped like 60% of the content in the game. Either load an old save or use paths to jump to v0.2.3 or v0.2.6, depending where you left off.
but then is there a reason i can't finish the maid training or is that all there is upto in this update? if not then i can't activate the erin peeking scene without completing the maid scene correct or am i wrong also i'm stuck at 52 affection with her is there a bug maybe or somehow to increase it