Yes, taking the 'leap' that they are not 'Guardian Angels' at all and what he meant were the angels of the Shemhamphorash, there are 72 which (in some systems) rule each 5 degrees of the Zodiac. Therefore 2 angels rule each minor card( which each rule a decan of the Zodiac). For swords that works out to be
2- IEIAZEL, MEBAHEL. 3- HARIEL, HAKAMIAH. 4- LEVIAH, GALIEL. 5- ANIEL, HAAMIAH. 6- RAHAEL,IHIAZEL. 7- HAHAHEL, MICHAEL. 8- UMABEL, IAHHEL. 9- ANNUEL, MEKEKIEL. 10- DAMABIAH, MENIEL.
To give these letters a number value we have two possibilities. 1- Frieda used the Cabalah of Nine Chambers to get a letter value (1-9) or she used the normal values associated with the letters. Usually in this type of operation (in the G.D. / A.C. tradition) the Cabalah of Nine Chamers is used.
If Frieda used 'squared paper' (graph paper?) and not a magick square and wrote the numbers in consecutive order she wouldn't have used a grid of 9x9 with the nine chambers because;
123456789
123456789
123456789
Using a different number makes more sense, like 8
12345678
91234567
89123456
as the numbers are staggered and more able to produce an 'irregular' design.
However, I know from expereince that it is a lot easier to make magic squares using squared paper or gragp paper as its a tedious pain to manually draw up accurate graphs each time, so she may have used the square paper to start off her magic square. (I'm taking the point that the dude in question wouldn't know a magick square from squared paper with numbers on it if he didnt know the difference between a Guardian Angel and a Shemhamphorash [unless he meant that those angels are the Guardian Angels for the cards???])
Also many letters in the names are repeated, eg. HAHAHEL only gives 4 points for 7 letters (in drawing up a sigil this is remidied by looping the line back to the number so you have a double line and are not going back and forward tracing over the same line). But with a grid (as above) showing each number several times allows one to plot a different position each time a letter is repeated.
The design on 4 swords appears to be on a grid of at least 15 points. I wonder how many boxes were on graph paper that was printed around Friedas time?
The other possibility is that she did use a magic square or Kamea of a planet
(The best ref. for this GD system is In "How to Make Sigils and Talismans' by Israel Regardie, a presice and brief handbook) where that uses the Cabalah of Nine Chambers.
So I guess its back to the magic squares and plotting the points with numbers from the angels names. (Just as well I bought a graph book
)
In any case the shapes made are not the nice star/crystal, balanced but chaotic shapes of Friedas but this can be remidied by surperimposing the reverse of the shape over the original (and eliminating the problem of the bottom of the square not being used). Also with 2 angels for each card there woukld be 2 shapes, with superimposing; 4. Now I think we might be getting something closer to the 'regular but chaotic' 'crystals' Frieda drew up.
We could possibly nut this out given a bit more time.