How can I make my flawed teleporter heroine more compelling?

I thought of giving her massive personality flaws, such as constantly falling for the wrong men approaching her and stuff like that. So I guess you'd say she's "super easy, but regrets being super easy". Being a teleporter, she doesn't understand how to set emotional boundaries nor does she obey personal space boundaries of other people, simply teleporting into a room instead of using the front door, etc.

I thought of having a scene where she explains how her powers work when talking to the other characters. It's like a quantum computer memory address system that she has for every place she's ever visited in her lifetime. I can spend like 3 paragraphs cranking out some bullshit that sounds "scientific" but is actually complete nonsense.

Signature fight move:

Teleport beyond someone and upward thrust them with a ka-bar knife into the heart and lungs from behind, OR simply slit their throat. Otherwise, if she has no weapon, she prefers to teleport-kick them in the face or groin. She is also a 4th degree black belt at Japanese Jujitsu, so she shows off her wrist locks and other techniques.

How can I make my flawed teleporter heroine more compelling?
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