Hiya and welcome to YT! Sounds like you and Lexi are gonna fit right in!
I think so long as you spoiling her does'nt create any bad behaviour that effects you or others around then its not a problem or anyone elses business
Yorkies are a "TOY" breed -their main purpose in life-the job they are bred for these days is to be LOVED and SPOILED by us
They are mostly cuddle bugs although there are still some that hold tightly onto their terrier instincts and don't want to be pampered
So long as both you and Lexi are happy and healthy, then thats all that counts
SPOIL AWAY I SAY!!!