How a person behaves in a relationship is not always indicative of how they'll behave professionally. Unless her boss starts to date her, your input isn't all that pertinent

Now you know the value of your relationship! Now estimate the value of your time going forward.

I was going to say to chalk it up to an expensive lesson learned until I saw what kauva replied. I like the small claims court idea even better. She really does owe you for the vehicle.

Call your insurance company and report the accident. They will collect from her on your behalf.

Create documentation for your insurance company with the accident:

Date;
Street address, city/state;
Time;
Driver's name, address and phone, employer and work number;
Witness(es) name and phone numbers;
Photos of damage to your truck;.
Who/what she hit with your truck;
Injuries, etc.

Next time, call the police when there is damage to your car. This creates official documentation.

Another option is to take her to small claims court.

Unless you're a shareholder in that startup....
Just fix your truck, or hell, that badly damaged... buy a new one. Stay well clear of her work-life.
It might be tough... but! Remain a gentleman and 'manly man'.
NOTE: NEVER loan expensive gear to people who won't cover replacement costs. NEVER let a lady move into your place....
"Typed from experience"

Boy,a rock and a hard place! In California,and accident over $500 has to be reported to the DMV,or bad things will happen,yes you could eat the cost,but how would you collect and forget any other romantic involement with her.

are you a friend of her employer? If not I go in the leave it be category. If you bring this up to a stranger who knows how it will get distorted and possibly come back on you