You can definitely try applying for the visa. Just make sure to research on it and submir a cover letter explaining why you wanna travel and your status in Canada and that you will return to Canada and she will return to spain.
Have you researched on getting married in Turkey? Their visa system is better. You could just state tourism and get married there.
She can apply for the Canada visa but be prepared for a long wait (maybe its faster for u) but just saying. Its been a year and 3 months since my fiance applied n been waiting for the canadaina visa

For the schengen, i think we waited a month and a half and got refusal although their processing time was 15 days in canada when i had applied.
May I ask how long it took for your PR? And what year? Like how long after you got your status?