SOLVED. Adult Romance series, dark. The last book in particular is about one of the women named Quinn(?). I first read the book around 2018. Spoilers ahead. [s]

[Danae]

The book is apart of series of three. Each book follows three women (friends or sisters). The three women (I think) are trying to solve the murder of their other friend. In the last book, She's (Quinn??) really shy and reserved, however, she owns a gun shop that is operating in the back of an old electronic store (they sell vacuums and things like that.) Turns out, she never had issues with her (mostly male) because one of her customers "claimed" her. They end up falling in love with one another. From what I can recall, the series was called "Baby Dolls"? or something to that effect. The cover was black, white, and pink. It had a picture of a girl with sunglasses sucking on a sucker/lollipop.

[Lobstergirl, au gratin]

Danae, your topic header (that's the title field of your comment) is a good start, but you need to put more plot details in it. From what you've already written. Use the little edit link.

[Crystal]

It's probably not it but there is a series called Baby Doll that has three books that focuses on multiple women. The first book is: Barbie Girl

[Crystal]

The covers for Bad Babygirl: The Con-Artist look similar too!

[Danae]

This is it!! Thank you guys for your help!

[Danae]

Crystal wrote: "The covers for Bad Babygirl: The Con-Artist look similar too!

"

The books ^^

[Crystal]

yayy :D glad to help!