Hmm, still not enough conclusive 'proof,' one way or the other. Even in the article of the discovery, it mentioned that three of the findings were thought to be female
I do not see women in Viking society going about on raids, it is amusing to think but it is also doubtful; just as it is unlikely that the article pertaining to 'half' the Viking warriors were women. Women may of held some status in Viking culture, but it is hardly enough to fathom it would be enough to permit them in joining the men in battle of their adventures of raids. They were still as valuable of a commodity and even more unbelievable if they had children during those times.
Now onto that other article.
If by chance Viking funerals pertain to mainly items they could use in the afterlife, there is some possibility women may be buried with 'weapons,' although that does not conclude they may be warriors. It could be symbols of their status and at the very most, they may, just may received some training in using them. I mean, who is going to protect the village while the men may be away raiding? Still, I seriously doubt if any training was given it would be enough to merit a battle harden/warrioress status.
There was another article in regards to women being found buried, one with an 'axe,' one with a 'spear,' and a double burial of wife and husband which had a sword and a ship burial containing many possessions of a family. Link
And to quote something from there.
A common problem when studying graves and their assemblages is that we do not really know if the objects deposited with the dead really belonged to them (in a sense that they were used by these people during their lives), or whether they belonged to those who participated in the funeral (e.g. Williams 2006; Sayer, Williams 2009). We are also uncertain whether the contents of the graves manifest the status of the deceased (or those who buried them) or whether the deposited objects were intended to convey other symbolic meanings. Hence, it is now frequently argued that the graves and their furnishings may actually provide more information about the people responsible for the burial, rather than about the dead. The fact that Ďthe dead do not bury themselvesí has very important implications for the discussions of past mortuary behavior.