I'll suggest that if the noise doesn't bother her enough to drive her to make a move then you should just wait for her PC to fail and force her to make one.
I further suggest that in the meantime you subtly attempt to scope out what she'll really need from a new computer so when it all hits the fan you're ready to move forthwith.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire
