What does “perfume regret “ mean here?

Does the word "feel" in this context refers to a touch of a coin? Or does it imply something else?

Yes, that's right! It refers to the physical feeling or touch of the coin. Ex: This blanket feels so soft. Ex: The sofa in your house feels so comfortable! Ex: Iris! Come and get the laundry from the line. It feels dry now.

What's "backbone" mean?

The "backbone" is the main support of a system, structure, or organization. Ex: The people are the backbone of our company. Without them, we wouldn't be able to do much. Ex: The coding is the backbone of the program. Ex: She's the backbone of our family.

What does "get pushed around" mean?

"Get pushed around" refers to being told what to do in a rude or forceful way. "Pushing someone around" can also refer to asking someone to do more than what is required of them in a rude way. Ex: My older sister pushes me around by asking me to do things for her, like clean her room. Ex: He got pushed around by his boss too much, so he quit his job.

What does "ever" mean here?

Here, "ever" is an adverb that means "at any time." They're saying that there won't be any point in time that she'd be a good person. Ex: You are too kind to ever be mean to someone. Ex: You wouldn't ever hurt me, though.

Does the word "reuse" have the same meaning as "recycle?"

The words are similar, but they do not mean exactly the same thing. To "reuse" means to use the object that is being talked about again as it is. To "recycle" means that the object will be broken down or processed and the material gained from the "recycling" will be used to create a new object. Ex: When I buy food in jars, I like to reuse the jars later to keep things like flour or rice dry. Ex: Did you know that plastic bottles can be recycled and made into shoes?