thoughts on getting a very similar animal as the one you lost

My cat of 13 years passed away this last August. She was literally my best friend and I still can't believe she's really gone.

I haven't been able to even look at other cat postings until recently. I was browsing cats on Craigslist and saw one for a cat that looks SO MUCH like her. Not exactly, but has extremely similar markings and long hair.

Wondering if anyone else has experienced this, or has general opinions of something like this. I never wanted to just replace her and still don't. Would adopting a lookalike be disrespectful/morbid?

I don't even think I'm ready yet to actually adopt another cat. I miss her so, so much. I'm becoming a little conflicted tho now because it's tempting to adopt the cat that looks like she did.