Dogs can't consent, so even if she feels she is married, it will never be legal.
Thats what they used to say about homosexual marriage
Animals can't consent and should be protected from sexual contact with weirdos.
But, if there is no sex, who cares?
Who cares if people want to marry a bridge or the Empire State building?
Same with polygamy. Except for the welfare of minors, who cares? Underage children cannot consent and that includes the 14 year old girls old duck dynasty frauds want to "marry".
There are tv commercials for yet another really stupid "reality" show that shows five "wives" and their litters of illegitimate kids.
How about we care about the kids and the animals who cannot give consent?
If one can give consent, its their business.