Purse holster

So I bought a thunder .380 plus for my soon to be wife's carry gun. So far she wants to carry it in her purse. She feels she can't carry it on her as she's 5'3", average frame size, and doesn't wear loose clothing often. So I had her look at gun purses. She loved the idea, but hates the way they all seem to look like "grandma" purses. She wants something with a holster in say a Coach purse. I told her I doubted anyone made anything like that. She would keep it in a pocket inside rather than just tossing itb in the bottom. That way she doesn't have to fumble for it.

So I've been thinking about how to make a holster in the purse for it. The biggest problem is that she changes what purse she uses every 2-3 weeks. I don't want to install a dozen holsters into her purses. So I've been thinking I need one holster that can be swapped between purses. I just can't think of a good way to mount it, or at a minimum, secure it so when she grabs for her gun the holster doesn't come with it.

As of now I'm thinking my best option is to buy a Remora, or similar holster with sticky outside and smooth inside, and attach on the bottom of it a weight such as a small metal bar or a bean bag. I know it doesn't need to be too much as the gun should come out pretty easy as is. Im thinking a 3/8"-1/2" rod about 3" long covered in cloth and sewn on to the holster. Or a small weighted sack sewn on.

What do you guys, and especially gals, think of the idea? Any other ideas? Has anyone seen anything like that done? Also does anyone know off hand which size holster a thunder .380 plus uses? Thanks much all.