I (27m) think my wife (25f) may be trying to guilt trip me all the time. how do I approach this situation?

to start with im autistic so all this is really hard and confusing for me and sorry if this is typed really bad im not the smartest.

my girlfriend of 10 years and I have had this problem the entire relationship anytime she really wants something and I don't immediately just say yes then she will immediately go into like a deep depression and then completely block me out if i try and talk it over with her and she makes sure that I know shes feeling that way.

this can range from having a baby that im not quite ready for to wanting to go to her favorite store after I worked 11 hours and am exhausted. some times I will try to compromise and will suggest getting some other things sorted out first or waiting till she finishes college and things are more stable but this is always met with remarks like "yeah right" "you wont" or just "whatever"

it also seems like when I do just give in she always wants more and more an example we rent a place and the lease says no cats or dogs and she did this over a cat for a long time and finally I begged our landlord to let us get one and we did. then about 6 months later she sees a cute cat on Facebook and starts begging for a 2nd one and I give in again. the past year now shes been begging for a 3rd cat or a dog. again this normally stems from her seeing a cute Pic on facebook or a friend getting something.

its really starting to take a toll on me along with alot of other things like yelling at me if i make a mistake like bothering her when shes reading or touching her face after she washes it

I think it might be unintentional and she really does get depressed when told no I remember she used to always do it to her mom to and I would see her mom do it aswell and her mom would always give in. so I think she was taught to feel that way.

its all really hard to understand and im not sure how to approach the situation so id like some advice.

TLDR: my wife gets extremely depressed when told no im not sure if its guilt tripping or actual depression.