Looking for a copy of MAC OS 10.10 Yosemite

I’m trying to deal with a situation on my wife’s laptop and need specifically MAC OS 10.10.5 as it is the only version that will work with the version of Adobe CS she has, and iTunes that will allow her to apply her iphone backup to her new iphone.

She has 10.9 installed, and only has the option to update to 10.13 I skipped 10.10, so I only have access to 10.9 and 10.11

I’m hoping someone out there has the magical version that makes this headache go away…

Would this update work?

It says it’s for 10.10.5


I was able to find a copy of 10.10 and we got her updated to 10.10.5. So she was able to do her phone backup.