… That was a difficult read.
Anyway, the most important question, What kind of car is it?
A lot of cars use a Dual bulb where basically one Halogen bulb has two different filaments.
It is USUALLY in this order The filament that is farther out in the casing acts as the Low beam and the filament that is closer to the base usually acts as the highbeam.
Needless to say, the filaments are never on at the same time, but alternatively to the other depending on the setting the user selects.
Now HID kits (Just the kits, not the OEM HID systems) drive high voltage through a package of salt (Xenon) and the lit salt is the filament in this case. HID bulbs, being D2S, D2R, D4S, D4R only have one packet of salt for the low beams.
Please read this closely. You should never NEVER install an HID Kit. They are simply D2S bulbs that are re based to fit on a 9006, H4, 9005, etc etc Halogen housing. Unfortunately with this, it is near impossible to achieve the same optics as on a Halogen Bulb… for numerous reasons such as intensity and Placement. Usually HID Kits produce a lot of glare. This is particularly noticeable when an OEM headlight uses a Light Bezel rather than shining the HID bulb through a Projector.
The best way to acheive an OEM HID look without buying an HID equipped car from the factory, is to Retro Fit an OEM HID Unit into an existing housing. It won’t be perfect because of things like the Freshnel lenses on the stock housing, but it’s usually far better than an HID kit.
Anyway, to try and answer your questions:
Not because she bought an HID high Beam kit. There’s actually no such thing in Kit form. There’s HID BiXenon from the factory, but that uses a movable shield to differentiate between a high beam and low beam, all on one bulb
Probably or probably not. No one knows without knowing first hand the experience of the individual.
Of course. Any HID KIT is a shit kit. Never buy an HID KIT
This is probably the case
PS. The lifespan of the HID bulb is severely reduced each time it is flickered on and off.