B.C.
It's hard but I think she's going to have to get use to it.
It might be a good idea to have a white noise in the background - like a radio making static or one of those sound machines where you hear rain while you sleep - it's very relaxing.
When a kid is tired - they'll sleep through explosions.
It's just not worth trying to provide absolute silence for baby to sleep - because then they HAVE to have it and a lot of the time it's just not possible.