With parental permission to get married, yes.
The fact that she is pregnant has no bearing on her ability to travel across state lines. The fact that she is someone's girlfriend also has no bearing on her ability to travel across state lines. There is no reason she can't go anywhere she wishes.
It is legal to own them, but illegal to sell them across state lines. This includes offering to sell them on eBay or Etsy.
The legal age to drive across a state boarder is 17.
Transporting a Minor across State lines is a Federal Felony Crime no matter what the reason. Typically a minor requires parental consent to get married. Without it, the marriage will not be legal. There are a few places that would allow a the marriage with a court order, but not likely to be issued if the parents do not consent.
It depends if said alien is from Space or your more garden variety location, such as Mexico.
It differs from state to state.
If they live in a state or country where same-sex marriage is legal, then they have the legal right to marry the person of their choice. If they live in a state or country where it is not legal, then they are denied that right.
If you don't get caught it is lol !! Seriously I think the limit is only 2 cases
I did
NO
Since laws are not written about impossibilities, it is legal to marry amphibians in any state. However, it is up to the participants to figure out how that might be done.
Yes it can.