I bought my first female Betta yesterday,...

After about a year of trying to get my LFS to get in female Bettas, I
finally went to a different shop, one that is far from my home when
you're riding on a scooter [15? miles], and having to deal with Kamikaze
cab drivers, et cetera, but one very close to my brother's home.
I brought her home and placed her in with one older male Betta, but for
the most part, they just ignored each other. Then late last night, I
placed her into my 30 gallon #1 tank, that sits just to my right, less
than an arm's length away. But again, very little interaction between
her and a young male, except for the first few minutes, where it
actually looked like the male was going to mate with her, but she
suddenly swam away, hiding in the nooks and crannies within the large
rocks. After a brief appearance a few minutes ago, she's back in among
the rocks and fake plants. By the way, she looks just like the ones
that I saw when I was in Thailand, sort of basic brownish-black colour,
with root beer brown highlights, and about two inches in length. I have
just now decided to call her, "Fe-ma-lee", which I've spelled
phonetically, after a character in the remake of the movie titled, "Cat
People", starring David Bowie. I am going to try and get the folks at
the newer LFS to order more female Bettas. Question, can I have more
than one per community tank? Would they gang up on the other fish? Or if
I get a bunch of them in one tank by themselves, other than the one inch
one gallon rule, would there be any other restrictions in the number
that can be in one tank? What other species of fish would be compatible
with females Bettas, the same as with the males? Any other info about
female Bettas would be much appreciated. Pax Vobiscum,...~Dean.