Shania Twain at Toronto airport on June 13
Todd G/Splash News Online
07/14/2008 at 01:00 PM EDT
Two months after her split from producer-songwriter husband, Robert "Mutt" Lange, Shania Twain
has found strength in the two things that mean the most to her – her 6-year-old son, Eja D'Angelo, and her music.
"She's spending as much time with Eja as possible and hasn't put down her guitar since the split," a source close to singer tells PEOPLE. "The songs are pouring out of her."
No doubt some of them – like many great country songs – are inspired by heartache. Twain, 42, announced her separation
from Lange, 59, in May, after she found out about his alleged affair with one of her best friends.
Twain is also keeping busy shopping and traveling. The now-single singer was recently spotted buying lingerie at a Holt Renfrew store in her native Canada. She's also been to the Caribbean, where she has a villa, and to Switzerland, where she and Lange once lived together.
Last weekend, Canadian fans were surprised to see their homegrown talent whiz through the Toronto airport wearing dark shades, but also sporting a big smile.